It's a REALLY obvious one for me (and I bring it up a lot I must admit), but the absolute WORST fighting game I played (so far at least) was Bleach Shattered Blade on the Wii. I didn't even read the manga or seen the anime yet (right now, I've got to get to vol. 3), but my goodness that game was horrendous.
It's only controlled by the Wii Remote and nunchuk and good gracious, they were awful. They were just tough to read outside of senseless waggling.
I did like Bleach: Dark Souls on the DS though.