thats another thing a manual boosted setup needs different gearing aspect and turbo sizing then a stalled auto. A good stall will make up for spool time where as a manual still has to go thru the rpms to reach the same point unless you slip it as you drive which will do nothing more then eat the clutch's life.
i noticed the same thing going from 488s to 410s. it made it nicer crusing on highways, it made it nicer roll racing but made it horrible for getting off the line and shift rpms