I normally play with a Babolat Pure Control Team Standard. Today my friend let me borrow his Wilson Pro Staff 6.1 Classic. To me it felt like it was MUCH stiffer and MUCH more powerful than my Babolat. I liked it a lot. However, when I compare the specs, it seems to me that the Babolat would be more powerful. It is only slightly more flexible (70 vs. 72), head heavier (7 pts. vs. 11 pts). The swingweights listed on the TW website are about the same (~326). Was it only the fact that the Pro Staff was quite a bit heavier that gives it more power, or was it all in my head that it had more power? What gives?