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The gain from P&G is that you operate the engine at the points where it is most efficient. Typically around 75% of max load at 2000-3000 rpm (#4 above) and when turned off . So definitely no drawn out accelerations.
On my car, hitting resume on the cruise control accelerates at a moderate rate that I think is in the range of best acceleration FE. So I can "pulse" just by hitting resume.
I also find that there is a point right around 45 mph where my car shifts into top gear (auto trans) and seems to lock up the transmission. If I can run at this high FE point, I don't bother with P&G. If I have to average 35mph, I use P&G.
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