I think you mean Andy has advantage indoors Basel?
If Berdych is on form, playing "cleanly" and painting the lines, then indoors suits his type of play very well.
However, he was most certainly "off" in Paris and had a huge number of UEs in his losing match.
Players like him have little margin for error. He is a powerful man with massive ground strokes and not much subtlety, so has no Plan B.
Hey, just being realistic folks. Andy's top game beats Bird's top game but we shouldn't be thinking it will be easy.