Chris rode one race that my dad and I organized. XROSS challenge in Serbia, on Tara mountain, in 2014. He stayed and rode with us for a week. He did a school that we set up. I've seen all the stuff that he can do, on a big bike, in person.
I know 1090/1190 are very capable bikes. Although I am not nowhere near Chris, I don't take them easy. This is me yesterday, on the 1190. (video in link).
https://www.instagram.com/p/BoVAfI8FWPy/?utm_source=ig_web_button_share_sheet
That said, please, trust me when I say this, no person in the world can do all the stuff that Graham teaches on 1090. I am sure if you come, and you attend, you will realize that your self. Until you do get such an experience yourself, I don't think your statements are backed up with facts. Looking couple videos on the internet of the best rider in the world, and ambassador for the model and brand, doesn't really give you valuable arguments.
Come and see for yourself. You can pay just for the spectators pass, which is really cheap.