Anybody towing 36', 9000lb TT with F150 HD payload ecoboost

I still haven't decided. I am test driving an f250 with gas 6.2 now. Planning to hook it up this morning to see how it tows. The empty truck drives very different than my current f150 Eco. No turbo feels very strange. It just does not have the reaction when you hit the gas. I am used to almost never having to rev the Eco but even empty the 6.2l has to downshift to go up moderate hills in Texas hill country.