Consider yourself corrected. Anyone born in 1992 could no more understand a world pre-Beatles than you could a world without the internet. Imagine a world where there was absolutely NO cred given to music other than classical, swing, jazz and some pop (Sinatra, etc). Then imagine 7 years later Rock and Roll is world wide considered a legitimate field of art/expression. No, the Beatles didn't do it all alone but they were far and away the most influential artists of the second half of the 20th century. Virtually every group with a guitar, bass, and drums built on their influences.
Now they WEREN'T fantastic musicians, technically. I can definitely concede that.
Looking back it is difficult to tell whether or not The Beatles lead the musical movement back in the 60's or whether they were just the most popular band in the movement. So I will have to take your word for it. But I would think that rock 'n' roll would have been given some credit with Elvis and a few other acts before The Beatles. Maybe not very much though. Another thing to consider is that things become more acceptable over time. If The Beatles did their thing before any other rock 'n' roll bands paved the way, would they have been accepted? Hard to tell IMO.
Going by influence I would easily give it to The Beatles, I just think they are given a little too much credit in that department that should go to other bands of the era and before the era.
I would also give The Beatles the edge in studio music although not by much. Although The Beatles did have some head-scratchers like revolution 9.
Live shows and Albums: Led Zeppelin by a mile. Although it may not be a fair because of the technology difference made it much more difficult to create live music and record it for the Beatles than Led Zeppelin.
Songs: The Beatles wrote great songs and great lyrics, Led Zeppelin wrote and stole some great music and great lyrics. Advantage Beatles.
Musicians: Led Zeppelin were easily better musicians.
Overall: The Beatles were probably the better band over all based on the fact that had the Beatles not paved the way Led Zeppelin probably wouldn't have been accepted at all. That said I like Led Zeppelin much better. If the OP was asking about which you like better or which band was better I would probably have different answers.
(BTW nice car. I have a dark blue 66 mustang coupe. I feel really dumb asking this as I don't know much about old cars beside my own, but is that a mustang? It looks a lot like my car from the side, but the picture is kind of far away and I'm not really good at telling different models apart.)