Question: Did the highest selling album of Judas Priest release before or after the one produced by Roy Z?

Context articles: Halford IV: Made of Metal
Tribe of Gypsies
Mercenaries of Metal Tour
Compass Point Studios
The Garden (Merril Bainbridge album)
Victim of Changes (album)
Trilogy Productions
Redeemer of Souls
Armageddon (Guy Sebastian album)
Angel of Retribution

Halford IV: Made of Metal is the fourth studio album by the heavy metal band Halford, the solo project of the Judas Priest frontman Rob Halford.
 It was produced by Roy Z and recorded during 2009 and 2010.
 The album was released on September 28, 2010.
 Singles from the album include "The Mower" and "Made of Metal", for which an animated video was made.
Tribe of Gypsies is a San Fernando Valley, California-based Latin rock group, best known for band leader/guitarist Roy Z who has produced, written for, and played with such well-known artists as Judas Priest, Rob Halford, and Bruce Dickinson who has used various members of Tribe of Gypsies to record his solo albums starting with 1994's "Balls to Picasso".
The Mercenaries of Metal Tour was a 1988 concert tour by British heavy metal band Judas Priest, in support of their most recent release, "Ram It Down".
 Unlike their other tours of the 1980s, no official Judas Priest release includes any live recordings from this tour.
 It was the final tour the band did with longtime drummer Dave Holland.
 The week before the tour started, the band visited Stockholm, Sweden for full production rehearsals at Hovet.
 Before the official tour start, the band played a few warm-up shows including one in a club in Amsterdam, Holland in early April 1988, where the footage for the Johnny B. Goode video was shot.
In the late 1970s and mid-1980s, many musical artists from across the world came to the Bahamas to record music at its facilities.
 Many producers, including Chris Blackwell himself, used the studio to produce recordings.
 AC/DC's "Back In Black", the second highest selling album ever, was just one of the many albums recorded there.
 Other well-known artists who recorded there include: Emerson, Lake & Palmer, Julio Iglesias, Serge Gainsbourg, The Rolling Stones, Etta James, Colin James, The Tragically Hip, Grace Jones, Shakira, Celine Dion, U2, Saga, Robert Palmer, Thompson Twins, Tom Tom Club, Talking Heads, Dire Straits, Electric Light Orchestra, Bob Marley, Eric Clapton, James Brown, Iron Maiden, Judas Priest, Roxy Music, Bonnie Tyler, Björk, The B-52's, Lenny Kravitz, Spandau Ballet and David Bowie.
The Garden is the first album by Australian singer Merril Bainbridge, released in Australia on 31 July 1995 (see 1995 in music) by Gotham Records.
 The album has a main genre of alternative pop songs — some written by Bainbridge herself, Owen Bolwell, Stan Paulzen (both of Tlot Tlot) and Siew.
 "The Garden" debuted inside the top ten on the Australian ARIA Albums Chart and is her highest selling album to date, being certified double platinum by ARIA.
 The album nominated Bainbridge for eight awards throughout the 1995 and the 1996 ARIA Awards including; "Best Pop Release", "Breakthrough Artist - Single", "Best New Talent", "Best Female Artist", "Single of the Year", "Breakthrough Artist - Album", "Highest Selling Single" and "Highest Selling Album".
Victim of Changes is ex-Judas Priest singer Al Atkins's fourth release, named after a Judas Priest song of the same name originally featured on the "Sad Wings of Destiny" album.
 The album's sleeve contains three pages of historic photos and a biography outlining his days in Judas Priest.
 Former Judas Priest drummer Dave Holland plays on this release.
Trilogy Productions was a music production team.
 Its founders were Eddie Galan and Drew Lane.
 Eddie Galan (Mach 1 Music) and Drew Lane left the company in 2007.
 Trilogy Productions had achieved 15x platinum status.
 They gained their fame in the past two years, 2006/2007, after producing a series of hits for "High School Musical", the "Hannah Montana" soundtrack, B5, and many others.
 2006 ended with an American Music Award nomination for "Album Of The Year", a Billboard Award nomination for "Album Of The Year," a Billboard Award win for "Soundtrack Album of The Year," and the highest selling album of 2006, all for their work on Disney's "High School Musical".
 The "Hannah Montana" soundtrack finished the year with the 7th highest selling album of the year.
 In 2007 they placed over 90 new major label placements.
Redeemer of Souls is the seventeenth studio album by the English heavy metal band Judas Priest, which was released on 8 July 2014.
 It is their first album without founding guitarist K. K. Downing, who quit the band in 2011 and was replaced by new guitarist Richie Faulkner.
 The album sold around 32,000 copies in the United States in its first week of release to land at position No. 6 on The Billboard 200 chart, the band's highest charting position in the US after the group's previous album "Nostradamus" debuted at No. 11.
 This marks the band's first top-10 album debut in the US.
 It has sold 110,000 copies in the US as of February 2016.
Armageddon is the sixth album by Australian singer-songwriter Guy Sebastian.
 It was released in digital and CD format on 12 October 2012.
 A deluxe edition featuring a DVD of a concert from Sebastian's "Armageddon Tour" was also available.
 The album reached number one and double platinum certification in Australia, and number 20 in New Zealand.
 It is Sebastian's seventh top ten album in Australia, and his second to achieve a number one peak.
 It was the ninth highest selling album in Australia in 2012, the second highest selling album by an Australian act.
Angel of Retribution is the fifteenth studio album by British heavy metal band Judas Priest, released in 2005.
 It is the band's first album since "Painkiller" (1990) to feature Rob Halford.
 The album debuted at #13 on the US "Billboard" chart, which made it the third highest chart of a Judas Priest album (the second being "Nostradamus" and the highest being "Redeemer of Souls").
 The album was produced by Roy Z, who co-wrote the song "Deal with the Devil".