Any dyno is a lottery, your figures will vary from time of day to time of year, that is a k03s on an AGU... he's got:
63.5mm exhaust
1.8 NA camshaft
large injectors
Forge cold air intake
Forge actuator (blue spring)
Stock K03s turbo
4bar FPR
Larger MAF
FMIC
Tested on Maha dyno, 100octane fuel, 25degree advance... and it's in a polo.