Power Meters / Powermeters (SRM, Powertap, Quarq, Ergomo, Vector, Stages, power2max, P2M, 4iii, InPower, Cinch)

So my max heart rate is 197. And I averaged 190 over a 25 mile course (London tri on sat) for 1hr08. Does that mean my threshold HR is 190? Seems too close to max to make sense?

Fuck, I don't even hit 190BPM avg when running a 5k sprint, let alone when cycling for an hour. Something looks dodgy, or you're a freak, or both?