Sorry guys but I think both of these statements have a certain perspective deficit based on the fact that I think the current Sentry/Void is being shown at a higher power level than the Sentry up unto this point.
As a result I dont think Thor's showing against him is necessarily expressive of a relative down-grading.
As far as Hulk> Void that smacks of a Hulk v Thor thread by other means and I am not getting into it as one it is banned and two monotonous.
Absolutely. If you've been reading Dark Avengers, as well as Seige, you'll see that this Sentry/Void is nothing we've seen before.
It's been pretty explicitly shown that this Void is more powerful than he/it ever was before.
WWH would have stood absolutely zero chance against this Void.