Are you looking at two specific racquets with those head sizes? You can get a lot of different sorts of performance in either size depending on the other spec's in the frame including weight, flex, etc. My 100 sq. inch NXG mp has some weight and some flex with an open string pattern and that frame is a spin factory while my 95 sq. inch ProStaff 6.1 Classic is more stiff with only slightly more weight. It gives me more pop and for S&V action, it's pure evil.
Either head size can potentially have lots of power, control, spin, etc., but because the string lengths on the larger heads are longer, I often find more liveliness in them and I usually need higher tension to get the same control that I enjoy with the smaller heads.