That's precisely the one reason it's one sided and not just straight non canon.
The moment these actual events are referenced in some New 52 story,
then we would entertain them being fully canon.
If such evidence exists, please provide them. Until then, they should only scale to the feats they have displayed.
Edit: Which btw, if you truly want this to be fully canon to DC, read
here
We would still not scale Thought Robot, Spectre and the others how you want them to. They would go strictly to the displayed feats regardless. They cap at 2-A.
Edit 2: Absolutely disagree with scaling immeasurable speed. Flash wasn't running through time there, so even if we somehow would scale him to legit feats, that wouldn't be it, chief.