I made the swap. Went from 2011 Ecoboost F150 to a 2012 F250 6.2L. Not looking back. The 6.2 doesn't have the empty "get up and go" feeling of rush like the Ecoboost did, but is has a never say die attitude when towing. I towed quite a bit with the Ecoboost, and while it never once lacked in power, the F150 suspension was getting taxed by some of my loads, lacked the stability, and towing fuel mileage SUCKED!!! The 6.2 gets around the same mileage as my Ecoboost did (I later found out that my Ecoboost had some major issues)...

So, my words to the OP...Make the swap. You'll be glad you did.