We reached agreement in a number of points, so I think this was interesting beyond the entertainment value.
Now I might as well go back to the Korvac clone incident that Zopzop mentioned a few pages back:
Said clone is a mix of Mainframe, Korvac and Michael the Enemy according to the plot. Regular Korvac is somewhere between high meta to low herald and that version of Vision is pretty much a futuristic Bat computer. I don't really see either of them coming back from a dimensional BFR. It's possible that this version was just inferior to Michael alone, since its parts are inferior.
Such a simple BFR tactic doesn't apply to Michael though, he teleported effortlessly to the Infinite Avengers Mansion and he was able to even detect Carina from a different dimension. He also rearranged himself after being split by anti-matter and he didn't even have a physical form. Both of those feats were accomplished by weaker versions of Korvac. And let's not forget his ability to send his power through time.