I think mostly because the title of the show was somewhat IMO misleading. It was about Speed coasters right? Tatsu while a great ride only does 62mph far from being considered speed. The Ferrari coaster, Top Thrill, Kingda Ka, Ispeed, I305, MF, Xcelerator would have been much better options to pair together. It just seemed random choices that had little to do with speed. The coasters themselves are fine, IMO they don't belong together in the same rankings I guess you could say.
To me it would be like Car and Driver doing an article about fast cars and having a Corvette ZR1, Ford F250 Super Duty Pickup, Toyota Camry and a Honda Pilot SUV, all in a "shootout".