I believe that Franklin Richards is now powerless. He apparently sacrificed his powers to save Galactus.
Thor is supposed to be Marvel's most powerful superhero (I believe that Stan Lee wanted it that way, but don't quote me on that because I can't find where I read it). It was recently announced that the Sentry is the most powerful. But at that time Thor was still dead. Hopefully now that he's been resurrected he will assume the role as most powerful.
No he's not as strong as the enraged Hulk, but he lifts over 100 tons. He's not as fast as . . . well I'm not sure (the marvel encyclopedia's scale show's him faster than Quicksilver was (for those of you who don't know, Quicksilver is no longer a speedster, he travels through time, to duplicate himself), but that also listed Nightcrawler as weaker than Jubilee). Early Avengers issues show him pulling off some agility stunts (when battling the Hulk) but he's not usually shown displaying his agility. He doesn't manipulate matter in the same way that Phoenix or the Eternals do. And yeah storm controls weather too, but Storm manipulates weather, she brings it from somewhere else (it has to be present in earth's atmosphere). Thor creates whatever weather effects he wants, and he doesn't require the concentration Storm does. He is also able to absorb any form of energy with his hammer, and then rechannel/redirect it. When he possessed the Odinpower (which is a really stupid word) he moved Asgard to above New York City I think it was. He's dented the Caps Shield, and then undented it. He can teleport, to other dimensions even (which I don't think the Silver Surfer can do) He survives unaided, probably indefinately although that hasn't been tested in space (which Superman can't do. By the way, in the movie, how did Superman get back to Krypton, and how did he leave it to come back to Earth? He needs the yellow sun to fly, and on Krypton he's like we are here, just smarter. Enough about that movie, but I can criticize it for probably close to an hour, and not just because it's DC. But I will leave you with this . . . The best (in this case best means most laughable) line in the movie was . . . "How much do you know about crystals?").
In the atrocity that was Marvel Zombies, the only moment I liked was when Zombie Thor smashed his hammer over the Silver Surfer's head, bringing down the Surfer to be devouerd by the rest of the zombies. I have nothing against the Surfer, it just irks me when he's portrayed as more powerful than Thor. Since everything in the Zombieverse is dead anyway, it didn't bother me too much that Mjolnir was broken, everything else was breaking.
I just looked back at what I've written and it's too long. I"m sorry, and I'm stopping here