Since I can't see the exact review you're looking at, here’s a breakdown of what such a review typically covers for that type of release:
It sounds like you're referring to a for a specific x265/HEVC encode of Gotham Season 2 by a release group named ShAaNiG . Gotham.-.Season.2.-.720p.HDTV.-.x265.HEVC.-.ShAaNiG