Wallace jumped in to note that he personally took the test after Trump said he “aced” it, pointing out that “it’s not the hardest test.”

....what you don't see Wallace saying here is that after he went and took the test any claim that he "aced" it, otherwise his quote would have been "I went and personally took the test after you said you aced it and aced it myself, it's not the hardest test." Obviously it was harder for him if he couldn't claim on national television he "aced it".