I will also add that my new TE "feels" slower than my 4th gen. I'm not complaining just an observation. Right off the lot it really felt slow however, after putting on 3000 miles (2500 in the last week and a half) it feels more responsive. I believe the lack of power we are feeling is a multitude of things. First off, the throttle is mapped completely different. Second, the 5th gens are heavier. Third, and this is only my guess, the engine starts producing torque later. Although it does make more torque, it seems to make it at a higher rpm. This seems to make the transmission react different than the 4th gen.
All in all, it's really not that bad. It requires more throttle input but once it winds up, it seems to go just fine. In the last couple weeks I've seen terrain from 1500' to 10,000' in elevation and haven't found a hill that it couldn't keep speed on. Passing on a 2 lane highway hasn't been an issue either. Also, most of these miles have been with lots of heavy luggage, 3 shelf units from Ikea, wife and two kiddos. FWIW, mileage has been 19 mpg. Not too bad considering how hard I've been pushing it.