Complex sentence: He had two releases in 2005: "Devathayai Kanden" was a commercial success, while Balu Mahendra's "Adhu Oru Kana Kaalam" brought him critical acclaim.
Split into simpler sentences: He had two releases in 2005 "Devathayai Kanden" and "Adhu Oru Kana Kaalam". The former was a commercial success, and the latter brought him critical acclaim.