Come on, it is E3! Just show cinematic trailer that doesn't any gameplay and people will be all over it! Or alternatively, just show 2 minute trailer, that just says name of the game.
But I think KOF XIV might have good chances there. SFV launch was "bit of a flop", so damage has already been done, KI is quite old already. Tekken 7 and SoulCalibur 6 could be force to be reckoned with. Maybe very hype trailer could be good, cinematic maybe?