Personally these balls are quite different, the BSG with the polish knocked off will be stronger than anticipated. It's a more versatile ball as well without the factory shine. It worked better for me than OOB.
For me the BGC was very smooth, even, controlled, even if they both can optimally cover the same lane conditions, the desired line of play should be different.
The BSG can be a bit jumpy off the dry, a low rev friend of mine using one some times has to put it away because it's move is too aggressive.
You can have both, step down to the BGC when the BSG is too much.
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With every action, there comes consequence
Used to be known as Pin_Krusher or Divine_Dragon