While there are no absolutes. Going from a TT to fiver is generally an upgrade. Fivers are generally roomier,costlier,heavier and have more storage and amenities than a comparable TT.
Yes there are nice TT's that compare to fivers, but across the board fivers are generally an upgrade from a TT. While I loved my TT my fiver is definitely an upgrade vs. my prior TT. The OP's post was not intended as a personal attack or slam on the TT community.
To the OP I went from a TT to a fiver about 3 years ago now. Everything's been great however I still miss the passenger room of my Excursion.
The drivetrain in my dually is a definite upgrade from my Excursion. But we are cramped in the crew cab vs. having all the passenger space in the world with the X. We have no room in the cab for friends,any additional passengers or stuff. Family of 4 and a Doberman and that's it.
I have no regrets but I do miss my X and TT it was a great combo.
Good luck with your search