What would be a better fighting system in a street fighter vs tekken

What fighting mechanics would you like them to use in a tekken vs street fighter. I imagined them using the tekken 3d fighting system it would be nice to see the street fighter cast with more realistic looks in 3d plus the moves list for the street fighter character will be higher on the other hand 2d would be awsome too if it was like TVC’s grafics and with street fighter 4 gameplay.

The answer lies in the heart of battle.

The NBA Live '05 engine.