I've been looking at other superchargers for other various cars/trucks. I've noticed like up to 50% gains hp/tq for them. Why is it that at most, the CT supercharger puts out about 50 hp which not even close to 50%?

I applaud Scalbert for his efforts to build a true supercharger for our CLs. almost 400whp is incredible, if not mindblowing. that's the type of increases I would like to see from the CT supercharger.

Why is it that the CT supercharger doesn't kick out as much hp like other superchargers?