If I remember correctly (small trip in the Way Back machine), the Sorcerer was very strong for a urethane, with a coverstock in the range of the old Blue Hammer, but with a stronger core. It rolled or tried to get into a roll pretty early. The Blue Warlock was more like a control ball, especially with the fairly rough stock 600 grit surface. It went slightly longer with, of course more backend, with respect to the Sorcerer.
I think both would work on medium oil today, maybe even a little more, but a bowler might need a little more ball speed to use the Sorcerer effectively than he would need with the BW (that early urethane lane grab). The BW's surface is, of course, much easier to modify than the Sorcerer's urethane.
The BW might be a better ball for most average rev rate & ball speed bowlers with an 800 or 1000 grit (US) surface.
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"None are so blind as those who will not see."