Jason, one of the Wonders family and a Visionary tech rep/person, has stated here in the past that the Ogre SS is slightly stronger than the Green Meanie. As I see/understand what he was trying to say, they're not identical, but in/on today's oil, the Ogre SS takes the place of the Green Gargoyle.
That said, I believe you'd have NOT ONLY to drill them differently, BUT ALSO you would have to modify one of their surfaces to get them to complement each other. And there are already balls, like the Ogre Pearl or the Gladiator Pearl, to do that.
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"None are so blind as those who will not see." Unofficial Ballreviews.com FAQ