It's Short, so It Sucks: The game is only six stages long, which can seem like a step backwards from Super Castlevania IV and Rondo of Blood. To make up for it, stages in Bloodlines are longer than the most of the levels in Super Castlevania IV at least. This game had two characters that played completely different from each other which extended the replay value a little bit. Of course, that doesn't stop people from judging it solely based on number of stages.
Visual Effects of Awesome: The wizards at Konami made Sega Genesis do some things it couldn't do, mainly scaling and rotation. The game as a whole is even more impressive than what the SNES pulled off in Super Castlevania IV.