he genesis version is smoother and has tighter controls
i find the choice curious though, as NHL '94 seemed to be the pinnacle of the series
NHLPA 93 owns, whips, and beats down NHL 94 for several reason:
-way better music and intro
-much more fun gameplay; crazy puck bounces etc. that's missing from 94
-no one timers (YES, this is a GOOD thing because it forces you to be creative with goals, instead of mindless one timer after one timer. I despise one timers)
-93 has fighting AND.....BLOOD! 94 is a pussy game with neither (parents complained and EA was pussy whipped)
94 fans will tell you 94 is better because it has goalie control, but the Genesis version goalie control is USELESS because you have to hold down the b button for 3 seconds, and by that time, the puck is in the net. It's worthless.
93 is just a lot more fun to play. I won't lie, 94 IS technically considered the best game, but TRUE gamers know 93 is by far the most fun in the entire EA series. I hardly ever play 94. But I still play 93 almost every night.