Apples to oranges....but we love our 2023 Highlander Hybrid with the N/A 2.5 engine. 40 mpg is easily obtainable for it on backroads, 80 mph on the interstate is 32-35 mpg. It's bigger and about the same weight as my GX too. No powerhouse but has perfectly acceptable passing power for a family hauler. We were initially waiting for a PHEV version but finally gave up as Toyota is/was coy about when they'd eventually offer a PHEV in that platform. It would have been nice but the normal hybrid is fine for our purposes.
I have not driven the Toyota TT V6 yet but have driven lots of Ecoboost F150/Expedition variants as rentals for work travel. While I much prefer the linear power delivery of a N/A V8, I can see the appeal of having more torque at highway cruising speeds, especially while towing. My GX can tow our camper just fine at 1800 rpm at 65 mph on flat ground but immediately needs a 4th gear downshift on minor inclines. TT torque would definitely be helpful there.
I have not driven the Toyota TT V6 yet but have driven lots of Ecoboost F150/Expedition variants as rentals for work travel. While I much prefer the linear power delivery of a N/A V8, I can see the appeal of having more torque at highway cruising speeds, especially while towing. My GX can tow our camper just fine at 1800 rpm at 65 mph on flat ground but immediately needs a 4th gear downshift on minor inclines. TT torque would definitely be helpful there.