I always cringe when I hear people say they "only tapped because..." as if it somehow lessens a submission.
Ok, if someone hits a submission which is illegal (or presumed illegal in training) then it's a cheap move, but just tap and move on. There is no need to talk about or justify getting tapped.
But worse is the "I only tapped because your arm was over my mouth" stuff. Anything like that is just silly. A tap is a tap, it doesn't matter whether it was done because of smooth technique, fluke, strength, crazy flexibility, smothering... or for any other reason. If you couldn't escape the position and had to tap, it's a done deal. If you "didn't need to tap but..." then why did you tap? Fight harder to get out. If someone wants to just hold you still for a full round in training then try to get out the full round, it's good training for you and not every round is going to be like that. If you choose to tap, you tapped.
"It wasn't a choke, just his elbow putting pressure on my shoulder"... nobody cares, tell your mum when you go home.