don
If these numbers are correct, they actually surprise me. I have done such calculations multiple times and never did the T7 come up with such bad numbers, the ones for the 380 are what i generally got.
My numbers were however always on the same route, the same day (so i haven't done a lot lately I admit...) but such calculations would reflect reality a little closer. The values for the T7 showed generally 15% better than yours.