I like a lot of what Snow Trax does. They ride a ton of different sleds and give a relatively unbiased opinion. People often think they show bias to certain sleds or models, but ST is giving their opinion for what they like. People get bent out of shape when ST says Model X is better than the offended's Model Y, and the offended has never even ridden Model X. Snow Trax rode both, they should know.
I do think it would be difficult for Luke to rate the Riot any higher than he did. He's made it very clear he loves the Assault. The Riot would need to be in an entirely different stratosphere for Luke to like it more. Having said that, the Assault is clearly the benchmark in that category right now. The bar is set high.