Crysis 1 PC edition was the best looking game (not talking about effects hiding blocky world geometry here) until I dunno Killzone Shadowfall took the crown
A lot of games look better than Crysis 1. Just to start, Crysis 2 and 3 and Metro Last Light. Killzone SF is way, way ahead of Crysis 1. Crysis 2 is substantialy ahead of C1 and C3 is a bit better than C3, that's on a similar level to Metro LL and SF.