Musou games. Just so many of them.
Dynasty Warriors games are awesome, love them! The latest one was kind of crap, so that one's fair. But games like DW 5, 7 and 8 Getting 50s or 60s is totally unfair.
Samurai Warriors too. IMO 4/5 are two of the worst games in the genre, yet somehow have 75/76 (high for a musou game), while the masterpiece that was SW2 only has 43/52/58 depending on platform. WTF? Totally unfair!