I put in bold what I don't agree with you. MVP and Pogi don't wait for WVA to control the race.
Do you have some imagination as in:
1. there are plenty of races where WvA is very much the marked man, in which Pogi and MvdP don't compete;
2. there are races in which WvA competes against Pogi and MvdP, and they try everything they can to drop him in order not to have to sprint against him (and because they are either better uphill / more explosive, they succeed in dropping him);
3. Comparing Sagan to WvA, both are very much marked men, but prime Sagan was dominant, while prime WvA is dominant except when Pog and MvdP are in the same race.
So conclusion:
1. WvA is a marked man, as much or maybe even more so than Sagan if you simply go by the number of wins and going by the fact that WvA is more beatable than Sagan, and thus shouldn't be marked as hard. This is because WvA is less of a finisher / explosive than Sagan, but still very much impressing his fellow riders during the race so they either try hard to drop him, or they look at him to close gaps / do the work. Part of WvA being marked is his own riding style (too much riding on the front / vulnerable for attacks from behind).
2. Prime WvA would win plenty of races if Pog / MvdP weren't there (those two are often simply better), while prime Sagan didn't have any rider simply better (except maybe Cancellara in Sagan's first years in the pro peloton). So WvA misses more wins as he has to face better competitors, and he also misses wins because he is as much marked as Sagan.