You wrote, "Nuts but not in decline." About Trump, you say, "Mentally he seems fine." Amazing display of illogic.
Trump has been in office for 3 1/2 years. His track record is, well, devoid of following an actual intended path on any policy. He has not only been making crazy speeches but has been signing goofy executive orders and taking ill-advised official action in many areas, such as his erratic, bonkers hirings and firings.
While you claim to judge Biden solely on the basis of speeches and pontificating that you think Biden is "in decline", you perform no equivalent analysis of Trump's speech failures such as forgetting what country his own father was born in !!
The body of evidence is overwhelming that Trump is not all there, both from Trump's meandering speeches as well as his goofy orders. Your "perception" that Trump is "fine" makes no sense except to the other Trump fanboys.
How in the world can you possibly state that a man (Trump) is mentally "fine" even after he forgets the country where his father was born?