First of all everyone is entitled to there opinion on music, pretty simalar to women haha
Its not that Harrisons solo stuff was poor on all things must pass, it was overdubed to hell, even he admitted that himself. But since youtubes come on the scene, theres been a whole lotta bootlegs of jus him and his guitar , which are amazing. His last album Brainwashed was by far his best in my opinion. If you aint heard of Joe, have a listen its spot on.
I dont think you can compare Zeppelin to the Beatles. The beatles were the studio masters, and Zeppelin were the live kings by far. I cant really wholeheartly say tht as i wasnt there, but have seen everything there is to see of them both on visual. Its jus different in it. One reviewer summed it up, the 60 was the beatles, and the 70;s was Zeppelins. There ramble over now haha