Gnashings, a change to the page is certainly possible, as is your having read it elsewhere and gotten confused about where you read it. In either case, I didn't mean to criticise or attack you, just post corrected information.
The best way to clear up any confusion, of course, would be for somebody with one of these cameras to buy both a 1.5v and a 1.35v battery and try them both under controlled conditions. If they produce the same exposure readings, then presumably the camera has correcting circuits; if not, then it doesn't. Of course, it's also possible that Canon introduced such circuitry without any fanfare at some point in the camera's production life, so some samples might have it while others might not.