US SBK vs WSB SBK. Lower tune, Dunlops, national riders vs higher tune, Pirellis, world riders
http://www.roadracingworld.com/news/hayes-leads-motoamerica-superbikesuperstock-1000-fp2-at-mazda-raceway-laguna-seca/
1. Josh Hayes (Yam YZF-R1), Superbike, 1:25.023
2. Cameron Beaubier (Yam YZF-R1), Superbike, 1:25.119
3. Toni Elias (Suz GSX-R1000), Superbike, 1:25.142
4. Roger Hayden (Suz GSX-R1000), Superbike, 1:25.262
5. Danny Eslick (Yam YZF-R1), Superstock 1000, 1:25.944
6. Jake Gagne (Yam YZF-R1), Superbike, 1:26.072
http://resources.worldsbk.com/files/results/2016/USA/SBK/L2A/CLA/Results.pdf?version=cfcd208495d565ef66e7dff9f98764da
1 7 C. DAVIES GBR Aruba.it Racing - Ducati Ducati Panigale R 1'23.622
2 1 J. REA GBR Kawasaki Racing Team Kawasaki ZX-10R 1'23.6963 69 N. HAYDEN USA Honda World Superbike Team Honda CBR1000RR SP 1'23.866
4 66 T. SYKES GBR Kawasaki Racing Team Kawasaki ZX-10R 1'23.891
5 34 D. GIUGLIANO ITA Aruba.it Racing - Ducati Ducati Panigale R 1'23.978
6 81 J. TORRES ESP Althea BMW Racing Team BMW S1000 RR 1'24.022
So, 1.5s to 2s a lap before qualifiers.
So... Graves Yamahas with less exotica in the internals, less electronics and Dunlop Qualifiers are running 23.6. The Pata Yamahas, full WSBK package with Perelli qualifiers are running 23.1. And as +Julian Bond mentioned, world riders V national riders. Of course there is some suspension wizardry that the world bikes have that works to their advantage as well. But all in all very respectable. It was a great show across the board! What a pleasure it was to be there and be a part of it.