In some ways SCIV is a study in how not to design a game, even people who call it their favorite game of all time tell you that you just have to get past the first three or four levels and then things pick up, for the most part you will only have around 2 or 3 enemies on screen at once, you have far more on screen in Rondo of course, the main way you or at least most people die in SCIV from what Ive seen is from disappearing blocks and such, in Rondo its doing battle with enemies, enemy AI seems to be far superior In Rondo as well, SCIV gives you multi direction whip...in comparison Rondo gives you the ability to jump on and OFF stairs, multiple characters, different paths to choose, item crash, back flip, slide, tumble, double jump, money actually has a purpose, able to pick your secondary weapon back up, a lot of people might not know but if you keep your finger on the jump button your able to control your jump, and the turtle crash, your able to control where goes (up or down) with the direction pad.
Like I was saying before, here are some of the fx/animations that are still being used today, no other snes or genesis game can claim this. This is where Rondo of blood is the best of its generation.
here are all of the similar SCIV fx/animation for comparison..cant capture transparencies