I think the cover and core match up fine,it's just a very agressive ball like the Nano, Revenge,and other high end hook monsters.
I disagree. The Pursuits, both of them, are finished to 1500 grit. That's very rough, in terms of today's covers where the roughest and earliest hooking balls are generally at 2000 grit, with the Nano and many other oilers at 4000 grit.
I tried a Train on some pretty heavy oil and it's all but unusable at the stock 1500 grit, the same stock surface as the Pursuits. I think these balls would be significantly more usable, FOR THE VAST MAJORITY OF BOWLERS, ON HEAVY OIL, at 3000 or 4000 grit. If someone were severely biased towards high ball speed AND low revs, they could take such ball as low as is permissible by the current rules to allow their use of them.For most of us, use of these balls at 1500 grit would leave many with 5-7s and 8-10s, on the right side.