yeah I thought the same!
Need to get mine on the rollers though, its running full STI mods with 1.5 bar of boost. There is a car for sale with exact same spec on facebook, even down to the turbosmart dump valve. He is running 1.5 bar and has rolling road printouts for 353 bhp at a dyno dynamics RR.
I am guessing mine could be anywhere between 300-350.