The ipad2 is a beast in terms of raw performance. The 4S should be even more powerful. More powerful than the GS2 even...on paper...
However, there is no doubt at all that android has completely leapfrogged Apple in the smartphone arena.
On sprint especially. The E4GT rapes the 4S. The screen alone makes the 4S look like an entry level HTC hero
"I have the bestest, awesomest ROM ever, only my camera, GPS and Bluetooth don't work"