I would agree the various studio drummers listed above are probably the greatest overall drummers recorded (Steve Gadd, Bernard Purdie, Jim Keltner, etc.). Yes some will go on tour with certain acts (James Taylor/Steve Gadd), but I don't think they are correctly classified as "rock" drummers. I saw The Killers this weekend. The Killers’ Ronnie Vannucci, Jr. rocked his drums for 2+ hours non-stop. Terrific show--I highly recommend it. Is he the greatest rock drummer ever? I doubt it. Do we know who was or is? No. Does Vannucci play with power, speed, and creativity plus know what a rock drummer needs to do in concert to make the audience feel good about spending big money to be there? Yep.
Greatest Rock Drummers
Given the subject line many names come to mind such as Ginger Baker, Keith Moon, Phil Collins and Carl Palmer but, is Neil Peart the greatest rock drummer of all time?
https://www.youtube.com/watch?v=YSToKcbWz1k
https://www.youtube.com/watch?v=YSToKcbWz1k