The Beatles may be overrated, but c'mon people, they're far better than you are making them out to be.
Sgt. Pepper is an amazing record (with the exception of one or two songs). Revolver, Rubber Soul, and the White Album are about as close to perfect as you can get. They took other styles and fused them together and made some pretty innovative music. They also inspired Brian Wilson to write Pet Sounds, which is quite possibly one of the greatest pop records ever written; after Pet Sounds influenced them, and they created "Strawberry Fields Forever", Brian Wilson wrote SMiLE, which is another one of the best pop records of all-time (it's just about perfect in my opinion). So not only did they create amazing records, but they influenced equally amazing records. They challenged others to push boundaries, while they did.
Musically, Paul McCartney is one of the best rock bassists of that era, George Harrison and John Lennon were both very talented guitarists. Lennon/McCartney were both great songwriters (for the most part, although it seems their solo material is a bit lacking). And Ringo...had a cool name.
Sure, they may be terribly overrated. Sure, the Kinks may have been just as good as them, but are hardly remembered at all today. But I think they deserve more credit than you are giving them.