You want to look into details? WSBK was essentially Ducati's own boutique race event for *YEARS* and you couldn't win on any other bike.
Yes, I've known and seen that for many years. Look at the bike I own now in my sig. Made to beat Ducati in WSB at their own game in the ruleset at the time.
Besides, that note is irrelevant to any comparison of manufacturers. It has always been the case as most manufacturers have focused on a select series or platform to compete and win on. Nothing new there. That includes suzuki, ktm, yamaha and Aprilia. As you note, Aprilia hasn't done much at all outside of a few series. In fact 38 of the 54 championships that Aprilia notes are from 125 and 250 cc grand prix motorcycle series, a very select series. Besides, Aprilia themselves used the "grand prix, off-road and superbike" comparator (see below) so don't shoot the messenger for comparing those series.
Aprilia entered WSBK when... 6 years ago? Aprilia was not in motocross, which is not to say that some people didn't try it there, they had a supermotard bike, which in Europe was huge when they built them.
Not to mention that companies like Honda, Yamaha and Kawasaki have been in business and racing for decades longer.
Yes, true, but I never brought Aprilia into off-road and WSB comparisons. It was Aprilia themselves who in their touting of 54 championships noted it was a combination of "(grand prix motorcycle racing, Superbike and Off-road)". Check out the their own media release.
http://www.cycleworld.com/2014/11/10/motogp-melandri-to-pilot-gresini-aprilia-in-2015/
And from Aprilia Canada.
http://www.aprilia-canada.ca/history.html
So again, using Aprilia's own metrics, that 54 total number doesn't compare very well to other manufacturers totals.
I found the break out for the 38 grand prix championships by Aprilia as it doesn't make much sense at first. It turns out 19 were manufacturer, 19 were rider. Doing it that way makes the Aprilia number compare even more poorly to the other manufacturers.
Compare the 19 Aprilia grand prix rider championships with the other manufacturers...
Grand prix rider championships
Honda 55
Yamaha 51
Suzuki 15
Kawasaki 9
Add in the earlier manufacturer grand prix #'s, off-road and superbike #'s, as per Aprilia's 54 total, and the other manufacturers do notably better. Simple math by Aprilia's own metrics.
Honda alone:
grand prix rider championships - 55
grand prix manufacturer championships - 63
ama motorcross rider championships - 38
ama motocross manufacturer championships - ??
World motocross rider championships - 23
World motocross manufacturer - championships - ??
WSB rider championships - 6
WSB manufacturer championships - 4
AMA superbike and sportbike which were a big priority for some manufacturers (both rider and manufacturer) - ??
BSB superbike and related classes, which again were a big priority for some manufacturers (both rider and manufacturer) - ??
Total 189 plus previous ??
So,.. the point is Aprilia's 54 world championships is not some amazing number. Not really at all. Let's move on from the Aprilia love-fest now.
Let's get back to the GSXR 1000 topic, and ignore the 750 timeline graphic posted with it.