Well, it was asked jokingly.
This does bring to mind the question, is a program that's still being updated by definition better than its not-updated (or updated as often) competitor? Not talking about SCI Companion vs Studio specifically -- it could be web browsers, operating systems, game engines...
Companion is by most any concievable metric the better program, so the question is obviously more interesting for other comparisons. Of course, we likely wouldn't have Companion without Studio to precede it. As much as I dislike Brian for abandoning it all (at least that's how I've felt about it all these years), I do respect him for getting the ball rolling.
Fun fact: I have never played Retro City Rampage, and it's unlikely I ever will. Not because of the abovementioned dislike, but because it's not my type of game.