On the plus side, they tried. This game looks good on stills and I agree with other members on the audio aspect: Awesome music and solid SFX.
And that's about it: this wonderful arcade that even played on MAME is still a breathtaking experience got slaughtered on our MD/GENs: Sprites are glitchy, it moves at the pace of a drunken snail, controls are unresponsive (going up and down is a chore): all these have a very negative impact on the gameplay, and morover you have only one life and no continues. Terrible game.