You theory is flawed.
By what you're saying, I should be making 220rwkw because I have an RB25 turbo on an RB30..
A turbo will make the same power on whatever motor it is on because it can only flow "so" much air. Smaller or larger capacity will just make the power later or sooner.
I also resent the WA reference, not all of us are dyno fiddling dodgy brothers