Now abortionpunch is being a ******, but note how he didn't say that he was accelerating from a standstill.
If he's referring to accelerating while already moving (in a gear that puts his cadence in his powerband) then he has a point. (manual transmission analogy: passing a car in 4th, vs. passing in 1st). It is pretty hard to accelerate more if you're already spinning your gear out.

If he actually did mean accelerating faster from stoplights in a high gear, then he is a ******** ******.