I have both, but don't bowl on any of the PBA conditions. The Mutant seems to go long and has a very hard angle to the pocket. My Invasion seems to rev up more in the midlane, with a bit more controlled backend reaction. I can see why they would use the Invasion more because I think it's a bit more predictable, but again thats on a THS not a PBA condition. I hope someone who bowls on some of the PBA conditions will reply to this topic. BTW, I love both of these balls, because they are so different, if one's not hitting right or carrying, I can switch and get a completely different reaction without having to move on the approach much or change my line.
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titletowncards