... There was NOTHING ringo did that was anything beyond average rock/pop drumming... ...
Well, let's not start an argument here, but surely Ringo's drumming on Abbey Road and other late Beatles' records is a good measure beyond average rock/pop drumming, especially of that date.
Also, I don't really think it could be denied that Ringo is a solid backbeat keeper.
Personally, I love and admire the great albums of the Beach Boys, i.e. Pet Sounds, (Smiley) Smile, Surf's Up etc. I am passionate about Brian Wilson's Smile album. The Beatles', on the other hand, leaves me rather cold, although, of course, I won't deny that I listen to some of their tunes from time to time.
However, Dennis Wilson as a drummer means nothing to me. I see his drumming as generic. (And I am not a Dennis Wilson-a-phobe, I have Pacific Ocean Blue on original LP for instance.) Ringo Starr, on the other hand, regardless of technical proficiency, was in many ways an inventor in pop and rock drumming. He did have a sound that was uniquely his own, reverberating into the 1980s in altogether different contexts, like Public Image Ltd.
In a classical drumming battle, Dennis Wilson would perhaps have spanked Ringo Starr. But like this poll shows, 21 of 23 drummers on this site consider Ringo an inspiration, whereas Dennis is mentioned only by 2. This is not coincidental.
The stiff, orchestral/symphonic drumming on Pet Sounds and Smiley Smile is more reminiscent of Ringo than Dennis, by the way.
/Magnus