3 3/8 is going to flare more than a 4, but the difference is not going to be drastic. I did not try both polished, I did try the Crunch polished though, and it was not bad.
I think the difference is in the core. Assymetrical vs symetrical. Anthony said it himself "You maxed out an assymetical core which tends to amp up the flare also when you get close to that sweet spot". I placed the MB on the Havoc between the thumb and my VAL. The pin on the Havoc is at finger level, and the pin on the Crunch was maybe 1/4 of an inch higher. The Crunch is a much smoother ball. I think the Havoc has a much better impact at the pins. This is not to overlook the Crunch, because I feel it is probably the most overlooked ball of 2003. As I previously stated, I don't care what the numbers say----these 2 balls are not close. Numbers are one thing, performance on the lanes are another. Numbers are a good starting point, but should not be looked into as much as what they actually do on the lanes.
Both balls move. The Havoc will handle more oil than the Crunch. I could use the Crunch on lighter patterns, no way, with the box surface could I think about using the Havoc on lighter patterns.