baer300,
Well, there are several implications of the stronger mass bias (Inter. Diff.). It can make the breakpoint stronger than a lower MB strength ball, but a lot depends on the rest of the ball's design specs, plus, of course, the bowler's delivery/release specs. Plus the range of MB placements and drill angles are more restricted for a set of bowler's delivery specs, as compared to a lower mass bias strength ball.
In this case, the C-System's design seems (to my eye) to have much more backend, caused solely by the coverstock, than a Siege's backend (original or Evil Siege), no matter the MB placement. I drilled my 2.5 "almost" Rico, with no weight hole and once medium oil has been burned away, the ball does a "Left turn NOW, Clyde!" and I have to put it away.
--------------------
"None are so blind as those who will not see."