So I just took delivery a week ago of my TFC. And I traded in my XDiavel against it, and prior to that I had a Diavel. So I do have some touch points on these things, albeit I’m still in the break in period of the new one.
First comment on power to weight, you need to add your weight as a rider to the calculation. This will reduce the gap to the lighter, less powerful bike. It’s pointless considering it without, as the rider weight will always be present. I mean if you had a 50lb 50hp bike, that would have insane power to weight (1:1) until you got on it (5+:1 - yeah you are, check the **** mirror fat boy) - exaggerated example but you get my point.
Second, the way the bikes motors perform are completely different. The XD kicks on like crazy past 6k, where the Triumph has to upshift. The Triumph is waaaay more refined.
‘Third, The riding position on the TFC owns the XD. Feet forward may be a preference in some people, but on massive power bikes it sucks. Hard acceleration, feet lift off pegs. High top speed, wind pressure pushes feet off pegs. Plus in as much as you can’t have a wallowy 300kg 180hp bike, they are quite firmly sprung and damped. If you are feet forward, bumps and expansion joints play like a jackhammer on your spine. In a more normal riding position, at least some of the weight is supported by your legs. Potential GT owners beware, a quick test ride won’t highlight this.