E85..great for boost?

[Steve85]

I was reading the forced induction section over at corvette forum and came across this setup.

350 9:1 cr
222-226, 114lsa 0.464"-0.464" (flat tappet) 1.52 rockers
AFR-190
HSR
stock 48mm TPI throttle body
Turbo
Front mount intercooler
E85


627 rwhp @ 4200 RPM. ( 17 psi boost @ 4200 rpm)

he goes on to say...

Using the same amount of air you need more E85 for a socastic mixture (50% more weight which is 40% more volume as E85 has higher density). Because of the lower energy content in E85 the engine will make almost exactly the same power on E85.

You see the large gains with forced induction and that is for two resons.
1) E85 has higher octane tha gasoline.
2) The cooling effect on Ethanol is much higher. Combined with the fact the more E85 is used the cooling effect on one gallon of air is about 4 times higher with E85 compared to gasoline.

The result is the the engine can handle much more boost without detonation and that is where you find more hp compared to running gasoline

Anybody seen this where turbos are a lot more prevelant? What are they saying about it?