Sorry, I couldn't resist!
- raw musical talent - Beatles
- stage presence - Beatles
- chemistry among members - Both
- no weak link members - Zeppelin (sorry Ringo)
- core members remaining the same - Both
- sheer number of hits vs. filler - Beatles
- longevity - Both (10 years each)
- music style - Beatles
- personal style - Beatles
- timing in history - Beatles
- personality - Beatles
- behavior / antics / excess offstage - Zeppelin
- innovation - Beatles
- commercial success - Beatles
- other bands who consider them an influence - Beatles
- overall legacy to this day - Beatles
