<sarcasm>
What's that? StormBowler83 is being a douche instead of trying to help someone out? Shocking. Just...shocking.
</sarcasm
From what I can tell on the BB.com Perfect Scale, the higher the number the more oil a bowling ball can handle.
I have personally thrown neither of these, but I've seen people throw the RoF and the Diamondback in league. From what I've seen, the RoF is a bit more aggressive in the backend, being able to create a touch more angle. I would say the two are pretty comparable, it's just a matter of if you want Storm of Brunswick really.
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Proud Supporter of Rob Stone
Obviously, you aren't a golfer.
Some stayed in the foothills, some washed logs like teeth.