Question: Who has more scope of profession, Benjamin Orr or Han Seung-yeon?

Context articles: Age of Youth 2
Candy-O (song)
Optometry
National Association for Chiropractic Medicine
Benjamin Orr
The Cars North American Tour Spring 2011
Han Seung-yeon
This Side of Paradise (album)
Stay the Night (Benjamin Orr song)
Age of Youth

Age of Youth 2 () is a South Korean television series starring Han Ye-ri, Han Seung-yeon, Park Eun-bin, Ji Woo and Choi Ah-ra.
 It is the sequel to the 2016 drama "Age of Youth".
 The series premiered on August 25, 2017 and airs on cable network JTBC on Fridays and Saturdays at 23:00 (KST).
"Candy-O" is a song by the American rock band The Cars, the title track of their 1979 album "Candy-O".
 It was written by the band's songwriter Ric Ocasek, was produced by Roy Thomas Baker, and features Cars bassist Benjamin Orr on lead vocals.
Optometry is a health care profession which involves examining the eyes and applicable visual systems for defects or abnormalities as well as the medical diagnosis and management of eye disease.
 Traditionally, the field of optometry began with the primary focus of correcting refractive error through the use of spectacles.
 Modern day optometry, however, has evolved through time so that the education curriculum additionally includes intensive medical training in the diagnosis and management of ocular disease in countries where the profession is established and regulated.
 Optometrists (also known as Doctors of Optometry in the US and Canada for those holding the O.D. degree or Ophthalmic Opticians in the UK) are medical professionals who provide primary eyecare through comprehensive eye examinations to detect and treat various visual abnormalities and eye diseases.
 Being a regulated profession, an optometrist's scope of practice may differ depending on the location.
 Thus, disorders or diseases detected outside the treatment scope of optometry are referred out to relevant medical professionals for proper care, more commonly to ophthalmologists who are physicians that specialize in tertiary medical and surgical care of the eye.
 Optometrists typically work closely together with other eye care professionals such as ophthalmologists and opticians to deliver quality and efficient eyecare to the general public.
The National Association for Chiropractic Medicine (NACM) was a minority chiropractic association founded in 1984 that described itself as a "consumer advocacy association of chiropractors".
 It openly rejected some of the more controversial aspects of chiropractic, including a basic concept of chiropractic, vertebral subluxations as the cause of all diseases.
 It also sought to "reform the chiropractic profession away from a philosophical scope of practice and towards an applied science scope of practice."
 It stated that it was "dedicated to bringing the scientific based practice of chiropractic into mainstream medicine" and that its members "confine their scope of practice to scientific parameters and seek to make legitimate the utilization of professional manipulative procedures in mainstream health care delivery."
 "While the NACM is focused on furthering the profession, its primary focus is on the rights and safety of the consumers."
 The NACM was the object of much controversy and criticism from the rest of the profession.
 It quietly dropped out of sight and its demise apparently occurred sometime between May 30, 2008 and March 6, 2010.
Benjamin Orzechowski (September 8, 1947 – October 3, 2000), known as Benjamin Orr, was an American musician best known as a singer, bassist and co-founder of the rock band the Cars.
 He sang lead vocals on several of their best known songs, including "Just What I Needed", "Let's Go" and "Drive".
 He also scored a moderate solo hit with "Stay the Night."
The Cars North American Tour Spring 2011 is a set of eleven concerts in the United States and Canada featuring the newly reunited American band The Cars.
 Announced in April 2011 prior to the release of the band's album "Move Like This", the concerts feature material from "Move Like This" and from the band's 1970s and 1980s albums.
 Singer/guitarist Ric Ocasek, keyboardist Greg Hawkes, guitarist Elliot Easton and drummer David Robinson perform as a quartet; original Cars singer and bassist Benjamin Orr died in 2000.
 Orr's bass parts are performed by Hawkes on keyboard and bass; the vocals on songs originally sung by Orr ("Just What I Needed", "Let's Go" and "Moving in Stereo") are performed by Ocasek.
Han Seung-yeon (born July 24, 1988), better known mononymously as Seungyeon, is a South Korean singer and actress.
 She is best known as former main vocalist of the South Korean girl group Kara.
This Side of Paradise is the second solo studio album released by Ric Ocasek, lead singer and songwriter of The Cars.
 It was released in 1986 by Geffen Records.
 Though it was a solo album, other members of The Cars played significant roles.
 Greg Hawkes plays keyboards and bass throughout the album (he appears on most of Ocasek's solo albums), and also co-wrote "Hello Darkness" (most Cars albums feature one Ocasek/Hawkes tune).
 Benjamin Orr is on backing vocals for three songs.
 Along with Hawkes and Orr, the track "True To You" also features Elliot Easton on guitar.
 Had drummer David Robinson been present, the song would have been an unofficial Cars reunion.
 Both production and drumming were by Chris Hughes (formerly known as "Merrick", drummer for Adam and the Ants).
 Hughes was the recent producer of Tears for Fears most popular two albums.
 Steve Stevens from Billy Idol's band plays guitar on over half the songs.
"Stay the Night" is a song by The Cars vocalist and bassist Benjamin Orr.
 It was included on his 1986 solo debut album "The Lace", and released as a single in the end of 1986.
 "Stay the Night" reached #24 on the "Billboard" Hot 100 chart in the beginning of 1987, becoming Orr's only Top 40 hit as a solo artist.
Age of Youth () is a South Korean television series starring Han Ye-ri, Han Seung-yeon, Park Eun-bin, Ryu Hwa-young and Park Hye-soo.
 It replaced "Mirror of the Witch" and aired on cable network JTBC on Fridays and Saturdays at 20:30 (KST) for 12 episodes from July 22 to August 27, 2016.