The only game I can think about is Street Figther, and bomberman.
The Turbo beats the living tar out the PCE game.
Valis III PCE all the way.
Super Bomberman seems more fun then PCE bomberman.
It has mister meanie, unibomber, Bomber Knight, Pretty bomber, Elect-bomber, Black bomb is your freind, pre-devil Bomber. However that was a long time ago, and I never really finished a PCE bomberman yet.
River City Ransom is perfect on the PCE, like Castlevania, but I miss the jeans.
Strider.....hmm. I think it is better then the Genesis, but the orginal arcade game is funner for some reason.
I'm kinda torn between picking up the PCE or SFC version of Shin-MegamiTensei.
I have both games. The SFC takes advantage of mode-7 alot, like when you die, for instance. The SFC death scene is more dramatic.
The PCE is basically the voice version, as with the MEGA CD game.
It seems that Atlus gambled on all three consoles, to see which one would gain the most sales. The SFC topped along with Ys4, because the children of course
I prefer the PCE game, because I wuv my PCE. Seriously the voice is what I get it for. I do not know how many voice scenes their are. The PCE has load times, between battle sequences to load monsters and etc battle stuff. Also the various graphics that are not featured
in the SNES game.
The SNES games win only because of the SONY sound. I can't get over that fact. The PCE PSG is reasonable, but the SONY sound chip wins,

.
Also the save file takes out the entire ramand you should use the external save instead of the Bram, however other games like Wizardry, also does this. You cannot move save file to the external device.
So the minus points are the
1. loading during battle
2. PSG sound vs SONY sound.
3. The oversized save file, that is one way ticket.
The bonus point is
1. Vocals
2. Extra graphics