I think, at least in this instance, the OP is talking about the entertainment aspects - not musicianship. There is a huge difference between an accomplished entertainer and an accomplished musician, not that the person behind the keyboard cannot be both, though. Both Eddie Shoemaker and Don Mason are in the both category. They are quite accomplished musicians and entertainers alike, therefore, regardless of the instrument they play, they will still do a great job of entertaining their audiences.

All the best,

Gary