It was about TSMC cost per transistor peaking at 28nm, and offering no improvement with 20nm, and even a retraction at 16/14nm.
Yes, but the real question is, what's the baseline?
If TSMC's cost per transistor at 28nm is X and at 20nm it's 1.03X and at 16nm it's 1.07x, then that's well and dandy, but what was Intel's 22-nanometer cost per transistor? 1.2X? 0.98X? 1.5X?
See, without the details, Intel's claims that it's just driving cost/transistor down could simply be them catching up after years of being behind/focusing on performance. Be very careful with the marketing messages any company puts out, particularly when they're unsuccessful and trying to attack/discredit their more successful opponents.