Ok I am moving along now. One thing that was confusing to me a bit was that the estimated W (from Bill's swiftech data) increased as flow rate was decreased. I thought about this a bit and decided it could go either way.
1) this is a real effect due to extra heat (max of 10W) being dumped into water by pump throttling.
2) this is weirdness due to imperfect insulation and the actual heat input is constant (I guessed 62W for 2200MHz 1.83V TBredB).
I graphed both cases:
The data with W estimated from Bill DOES seem to suggest improved performance at really low flow rates (as Bill was advocating). Not sure if 10W extra for the throttling is reasonable though.