The worst thing about the game is not that it's 2D, but that the game is lazy and missing a ton of shit that there is no reason behind -
Shun and Lion are missing, the only stages in the game are Kage's, Akira's, Jeffrey's, Sarah's and Dural's. The only music in the game is the music from those respective stages. The stages are recycled between characters with pallet swapping to make them look a little different.
The game itself is playable, but it's so obviously a cheap cash-in when it's missing so much - there's no technical reason you couldn't include all of the fighters and stages (for example check Super Street Fighter II on MegaDrive where every character and stage from the arcade version is in the game).