Wirelessly posted (Mozilla/5.0 (iPhone; U; CPU iPhone OS 4_2_1 like Mac OS X; en_GB) AppleWebKit/533.17.9 (KHTML, like Gecko) Mobile/8C148 Safari/6533.18.5)
No clue, but i would imagine they may be about the same. Surely would depend on what app is being used? I know that Skype runs well on my iTouch.