I pointed out that 3 out of the 4 teams you were using against a partnership was against 3 of the current top 4 so you can't compare playing those teams to playing most of the teams faced by Ba, Best and Shola. I actually thought that the Ba/Ben Arfa wasn't too bad against Man City and Man U and I think taking a point from Man U with a goal scored by Ba and made by Ben Arfa is one of our best results so far this season, if not the best.
I didn't see Ba having any more time on the ball against Swansea and West Brom when he was playing with Best, what I did see was Ba doing everything he could to get goals while Best did next to nothing.