I had always thought the charge bonus to be the force that graphically threw the defenders if they were smashed into by heavy cavalry... but I dont see that effect anymore, but TK stated its not in 1.2 so that may be why.

I dont see why their answers dont work with the infantry... if it follows my line of thought then the 300 pound celt with a hammer running at you is harder to stop than a guy who casually strolls to your position and begins his attack.