I have been told that the opinions I'm expressing regarding the Silver streak core are not true.

Specifically
1. The Rotory core is not a "chopped off" version of the Fuel Core.
It did not happen that way and cores are created by a different process(no lopping).  I still believe I see a "Lopped off fuel core however, though it is apparent that was not the intention).
2. The sharpness of a core is in Roto's opinion a factor in the sharpness of ball s movement and instead rg and diff determine much of this.  Again I still believe what I said but will acknowledge that that is NOT Roto grip's position.

I still like their balls!  They when they have a sharp core move real sharp!
With a round core move real smooth.  

REgards,

Luckylefty
PS the positions expressed in this ballreviews comment are specifically the beliefs and opinions of the author and are in no way shape of form the opinions of any ball company, manufacturer's rep or other individual except the author's and there is no scientific basis that they are right!  
THEY JUST ARE!....  PROBABLY!  (good God, I've been in the investment business too LONG!)