They’re basically comparing potential volume flow of race gas with E85, with a simple limit of total fuel volume.
In addition to being less energy dense, E85 requires a much higher volume of fuel at the same lambda ratio.
put a different way, with a limited volume of fuel, the leaner AFR of race gas means a lot more air - you will be supporting a much more bonkers setup of turbo/boost/tune than with the E85.
Its not at all like comparing the same turbo setup and supporting mods and swapping fuel types.
To put it in perspective, you can top out that E85 number on a Hybrid turbo, but the same volume of pure race gas will support a much more extreme big turbo setup. E30/40/50 is great in our engines because it’s somewhere in between - you can go farther on lower budget mods given the limitations of the direct injection fueling system and the limited choices in stock/upgrade injectors and HPFP.
On a standard port injected engine (or using Aux fuel) you can go E85 and just toss in a tank pump and massive plug and play 2150cc injectors and call it a day without being anywhere near fuel limited.
If you’re not fuel limited, then yes, comparing the same turbo and supporting engine mods with E85 in many cases is capable of slightly more power than 100oct race gas.
If you’re still thinking in the pump gas/E30 realm, ethanol makes more power because your setup is usually limited by heat and timing/knock, and not fuel flow or even airflow since you can just increase boost and add more sauce.