I got 360m of the advertised 450m climb but then I suspect it was measured on the straight line (as would be the natural thing to do) and I definitely did not take the straight line from 2-3, which cut off heaps, as well as 5-6, which cut off a bit more.
with elevation correction turned on Garmin says 367 - with it off 448. either way under the advertised climb :P