Mike,
In my opinion, the Ultimate will hook more and appear to cover more boards than the Raging. They are still both heavy-oil balls.
IMO, The Raging just grabs early, and give most bowlers the look that it won't hook as much as the Ultimate, which will save energy just a bit more than the Blazing and then give a later hooking action, giving it a more "appealing" look on the lane. I think the hooking potential created by those balls are quite even- i think/hope that Brunswick did that to allow bowlers who don't like the early hook to have an option to have a heavy-hooking solid reactive.
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-Jeremy Vitug
MFBSB!!!