The take-rate of the V6 in the Camry had been sitting around 15% IIRC. Not sure if that's changed recently as others have dropped theirs.
Most people don't wind out their motors in traffic, so a turbo 4 tuned for low end torque is going to feel stronger than a V6 that needs a few revs before the power comes on, all other things being equal.
I don't see the person considering a Camry or Avalon to be particularity interested in performance. Mid-size mainstream performance cars just can't seem to find traction anymore.