I think it should be very obvious to anyone watching them, who is the most confused, frail and generally out of his depth.That’s not exactly objective though is it.
It’s a pretty weak argument that one candidate is “too old” at 77 but the other at the ripe old age of 74 is strong and capable. The age doesn’t seem to come into it, just personal opinion.
Looking at both men health wise Trump wins hands down.