Fair comparison, but is it Vettel who deserves credit for sticking with the unproven Red Bull or was he contractually obliged to? But I agree. I think the only way people will start properly rating Vettel as a world class driver is when he is given a world champion team mate. That would be the best test of all and something to relish.
Despite that I can’t see how anyone can win 4 world titles and not be considered a truly fantastic driver. He’s not the only one driving that Red Bull, afterall.