I'd agree with the previous poster.
VG has a sharper backend. The BH is much earlier and smoother, and being a particle ball handles more oil, in fact, requires more oil than the VG.
I'd even go so far as to say, that for the average bowler with avergae ball speed and average rev rate, the VG is a step down from the BH, that they'd make a 1-2 combination. I think the BH handles that much more oil than the VG.
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"None are so blind as those who will not see."