Looking at your torque figures vs rwhp I'd say you were running Nos.
For supercharger only - all the options have their fans and their good points.
As for who has the most power on a stock motor - you'll get many claims - but you'll end up having to trust their word there wasn't other help - like a shot of NOS, or an internal power adder etc.
I know that DLM seem to have really got the Creampuffs down to a fine art, and I also know that Doug never uses NOS when he claims an engine is SC only - not even a small shot to cool the intake charge. I assume the others are as honest but can't speak for them as I'm not in a position to know.