Honestly I don't see much difference at all.  You're right, the core numbers are exactly the same and the Smoke appears to have a slightly stronger coverstock.  I doubt that there is enough difference to see anything different on the lane.

There are a couple of issues here that you guys are missing.  

Cover stock composition:
Of the three Angles the two closest to the Smoke I am going to guess are the Red/White and Blue/Red...

If my memory serves me right the R/W is a Reactive/Urethane Blend kind of a hybrid if  you will.  With there not being as much reactive resin in the cover it seems almost impossible for it to be any stonger than the Smoke especaially since the cover is weaker from the start.

Now with the R/B I believe that one is a Urethane/Poly blend, again a hybrid if you will.  I own this ball and wow, what a winner!!!  Thanks Tekneek.
This is a ball that when you get on some dry and I mean dry this tool is the mother of all tools.  I can play up 10 with out a drop of oil and not worry about the ball over reacting and since it's dry out to my right it rolls in with out hesitation.  Basically is a 4-5 board hooking spare ball.

If I getting a Smoke here in a week or two when they are all realeased and I plan to use this on the dry like I was explaining but with a little bit more swing room.  I'll post just how well that works out and how it compares to my Angle R/B.
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Surface Soutions Pro Shop
Greenville, MI 48838
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Oh, I'm clear.