Snes só tem esse histórico ruim com jogos rápidos por conta do preço dos cartuchos. Tem algumas pérolas super rápidas também principalmente nos jogos japoneses. A maioria, ou não sabia muito bem o q tava fazendo, ou não queria investir em memórias maiores pros cartuchos pra baratear a produção do jogo. E não me refiro a chips especiais. Snes, assim como os outros, tinha memórias de tamanhos e velocidades diferentes nos cartuchos. Só dependia da desenvolvedora.

The PC Engine has some great shmups, but technically the stock SNES can beat it almost across the boards in graphics, sound, and controls, so there's no great excuse for the SNES not beating it outright in the shmup category. Some shmup games on SNES do show its technical superiority over the stock PC Engine, and pretty obviously at that, but really not as many as should be the case. I think a lot of that is due to many SNES shmups running in SlowROM at 2.68 Mhz and only 75% of the system's full speed, which was a choice of the publishers rather than a limitation of the console, but even then some of those games are still far more advanced than anything on PC Engine (Super Aleste, R-type 3, Choujikuu Yousai Macross: Scrambled Valkyrie, and the shmup sections of Rendering Ranger R2 being a few great examples). I really would have liked to have seen even more great shmups on SNES though.