In out-of-box condition ( a dull sheen finish, 1200 grit, if I remember correctly), the Savage will handle a lot more oil than your Super Trooper. If you were to sand it to 600 grit, it would probably handle anything short of a true flood for most bowlers. If you have high ball speed, it still may not be enough, but since you're using a Super Trooper for medium oil, that's not too likely.
If you decide to go with the Savage, and you are really bowling on "heavy oil", you can add to its effectiveness by putting an early-rolling drilling on it.
It's a very adjustable ball. If the price is very attractive, I don't think it would be a bad choice for someone whose only other ball is a Super Trooper.
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seadrive
Cogito ergo bowl