I think the toughest thing for a Trailhawk on this trail would be front end visibility. The Wrangler sitting higher and with a shorter front end will be easier to navigate the switchbacks. I can't even see my front end when pulling in my driveway at a slight incline. Then there are those massive A pillars...
As for their ratings in general, 90% I'd do up to a 4, but I might hit some 5s at times. Most of the trails in Colorado are 4 or less, and keep in mind high end rating means you might only see a 5 once during the entire trail section. It might only be a single obstacle. Reading the trail descriptions is key.
I do think the Trailhawk is pretty close to a stock non-Rubicon Wrangler. Ground clearance on a sport model is 8.8", TH is 8.7". Keep in mind ****'s Revenge is a 5 on the low end rating for their scale. That means, at a minimum, a TH has done 5 rated trails, even if they didn't do all the obstacles that warranted the 8 on the high end. Wouldn't do it without rock rails though for sure. When they did it, they scraped them quite a bit.