Actually, I belive my suggestion is not completely correct.
The amount of Assist depends entirely on load conditions.
A couple of months after I wrote that article I took my HCH on a series of MPG accelleration test runs and came to a conclusion that clearly a gradual increase in speed is best.

However that too can be taken to the extreme and hurt your MPG by lingering far too long in the very low numbers.

Efficient drivers do it better.
1003 miles a tank personal record. 74MPG calculated. HCH1 CVT