I agree with this as well, I haven't changed mine either and see no need to without the aux fuel.
I am happy to discuss
On the dyno graph you posted, it peaks at 298whp. Thats a good 30whp more than my S280. I have no idea what the climate was or the altitude, but I'd say its a good measure that most of us end up around 270whp with the bigger turbos since they flow more air and thus require more fuel at the same RPMs.
Also agreed, however from personal experiences I can tell you that my car does not pull as hard as the hybrid cars in that RPM range. I have raced a C39 car and an X47R car and both have pulled away from me fairly easily. Maybe its in the tune, maybe I'm not the best driver, but either way practical experience > dyno numbers. The additional headroom was also a selling point for me because I know I'll want more eventually.
If not properly managed with a good / great intercooler (CPE, BA, DHM Race etc) the heat levels will just cause more knock / detonation on repetitive pulls. Charge air temps exponentially increase on the hybrids where they do not on the S280 / other "big turbos". Plus the fact that a lot of sellers like to advertise their "depo" intercooler supporting 300+whp, it can't.
I'd like to point out that I was not advocating for the whoosh or other hybrids in any way. I don't think they are worth the price when you can get an S280 for nearly the same price. I agree with that wholeheartedly and it is the main reason why I have the S280 vs a hybrid.