No one really talks about Beatles in terms of their talent, with the exception of the common opinion that Lennon was a good songwriter. They were a pivotal pop band, and believe it or not, their influences go beyond and into your realm of music.
BTW, banRAB like metallica, guns and roses, korn, good charlotte, blink 182, and the other banRAB you have mentioned are indeed very radio friendly, and I find it hard to believe that you enjoy music from these banRAB and find the beatles to be overrated. Talk about "mediocre" banRAB- the banRAB you named are less than mediocre.