Wrong question... Stacked leverage is one of the strongest setups you can chose for a ball - but pls read this correctly: it is about layout, not preformance. With this setup, you put the core in the most unstable position upon release, and the CG/MB marker promotes a strong hook due to lots of flare. Such a ball tends to hook early and a LOT, so it is - if you have a devent release, suited for long and oily shots where you need some extra help to get the ball from skid to an end roll.
Speed-challenged players will IMHO also benefit from such a layout, but the ball should be chosen wisely - if you have a low RG/high diff. piece, chances are high that the ball rolls out because its core migrates so early and strong towards its PSA. It dioes not make a difference whether the core has a low or high mass bias - but high MB cores will tend to migrate towards the intended PSA more violently and even quicker than simple pieces.
Covers have become so strong that such a powerful layout is hardly ever needed, though?
--------------------
DizzyFugu - Reporting from Germany
Confused by bowling? Check out BR.com's vault of wisdom: the unofficial FAQ section