Are you kidding? Trump is easily 20 years younger than Biden. One of them can't even construct a sentence without getting any help from the others and the other one can do QA's for hours.
Biden is practically a dead man walking (he can't even walk properly when you think about it now) while Trump can still do MMA fighting.
LOL.. Trump is the same guy who took Hydroxychloroquine as a treatment for COVID 19 without any expert medical advice. It looks as if he is healthier than Biden, but then in terms of age he is slightly behind Biden. Americans need a fresh face who can control the inflation and put the American economy back in track. In terms of mental capacity, I would rate both of them at the same level. One is suffering from dementia while the other is mentally unstable. I would prefer someone fresh from both the camps, although it is not solely due to the age of these two.