What's wrong with taking historical parallels? '94 was a Dem bloodbath, but Hillary's husband hung on just 2 years later. Same with '82 and '84 reversed. Sure, DJT may be a one-termer, but it's common for the outparty to let out their frustrations in the midterms and then tire out by the time the Presidential campaign rolls around.
But you're not even
trying to justify why your parallel will happen. You're just saying it will because it's the closest example for you to latch onto, even though the circumstances are not the same.
Also, you didn't answer my question. If Trump is going to have his own 2012 reelex moment like you said, then by the 2012 scenario, he must lose considerably more support, just like Obama did. The thing is, Trump
can't lose more support and still win. His original win was so razor thin that even a 2.5% popular vote win for the Democrat would knock him out. Except a 2012-scenario would suggest the Democrat winning the popular vote by >= 3.5%. Trump won't survive that.
So your hypothetical 2012 scenario doesn't really add up. This is why you should actually present a well-reasoned argument instead of just pulling things out of your butt and throwing them on the wall. Maybe it makes sense in your head, but what you're actually saying doesn't.