I think Cav is just making his rivals look a lot more ordinary than they are. Hutarovich may be a perennial underachiever but he has beaten Cav before, but yesterday he timed his sprint to perfection and still couldn't get past him. I don't recall Cav ever looking this good at this stage of the season. And he's clearly loving every moment of life at OPQS, which you can tell by things like the way he was unruffled by a rider coming off his line and impeding Cav in the run-in on stage 4. A less contented/confident Cav might have sat up at that point and waved his arms in annoyance, but he just swerved round the offender and took the win convincingly.
Greipel is the only rider out there at the moment who's even in the same league as him. Goss is no slouch but he's second division. Degenkolb likewise. Farrar, I feel sorry for - I don't think his heart is in it any more.
d.