Haha, well test it out and see if it works. I think I was testing it right, setting the CPU to duck and seeing if I can still grab him on wakeup. I'm not good enough with it yet to record it and test it on myself.. I always mess up the recording.
Also, Atlas Torpedo might end up being a decent anti-wakeup move. If his strategy revolves around forcing the opponent to use wakeup attacks, some of them will obviously be able to be blocked and punished, but not everything. With Atlas Torpedo burning through the opponent's wakeup and making you avoid it, at least you get a return to neutral position. Or you may be able to delay it so it hits the opp. after his invincibility frames.
I really know very little about the wakeup attack properties for each character, I was just testing with a few, and they don't seem to have THAT much invincibility, so... well it's worth testing in the future.
Edit: Tested with Cyborg and Doomsday, if you time the Torpedo to hit as soon as they get up, it will harmlessly pass through their invincible wake-up attacks, including wake-up supers. Not sure how really to use that yet, but it may come in handy.