Horrible logic. Takam has great stamina. Just to be able to hang in with him for 12 rounds proves legit stamina. Whyte's stamina is a bit worse than AJ's. Count the punches per round instead and you will see a higher output from Parker. Thus better stamina.
Parker gassed a bit after throwing a lot but recovered in later rounds to dominate the late action as well. I think too we have not seen Parker's best yet