No one had ever heard of Guaidó before, and everyone knows Trump.

He'll do a self-coup, more like what Erdoğan did 2 years ago. Probably around the terrain of the judiciary- it'll be far more acceptable (that is, far less risk of open warfare) if he just follows the 2000 blueprint with voter suppression, intimidation, media narratives, getting the SCOTUS to call the election early, and implicitly daring the Democrats to play chicken. It's a fairly safe bet- people would revolt if he refused to accept the results of the election, but no ome would reach for their guns if the election was just called early.