Will, Bitcoins are roughly 1000 times easier to hash than litecoin, so you could theoretically get around 1.5 mhs with it on Bitcoins.
I suddenly feel like you don't know what you are talking about... ?
I read that statement here: http://dustcoin.com/mining (on the bottom of the page.)
Don't know how true it is. I don't mine anything but ltc.