Hmm, really? I can understand Pyrrha and Ptroklos, but Tira and Viola? Tira was always in the bottom now she is just good, and Viola, when you play seriously, is not that ease.
Hikari while that is true Pyrrha is truely mindless. You can win just by doing pokes because all of her pokes cause a mix up on hit and they're safe. With Pat there is at least some thought. Viola actually requires taking risks at times and Tira requires dealing with jolly.