He is by Word of God the strongest Hulk, so yes he is a paragon of strength when it comes to the Hulk
Citation on Maestro being stronger than WB Hulk?
Silver Surfer treats planet busters (like Beta Ray Bill) like garbage; beating on them so hard he's apologizing for it. He also ignores hits from Maestro and can intimidate him into not even trying to fight him with a few words. Maestro > WB Hulk.
What issues were these?
Post-WB Hulk amped by Odin's brother. So stronger than he's usually portrayed.
Okay, I looked up a synopsis of this storyline, and I can't find any mention of Hulk using the wishing Well to amp his strength. All I'm seeing is him wishing to bring his friends back to life, and to give his friends what they want.Heart of the Monster, where he is explicitly amped with magic from the Wishing Well, along with the rest of his rogues gallery.
So I'm gonna need you to cite where it's mentioned that the wishing well is amping him up.