Keep in mind we are dealing with 1\1000 of an inch here. There isn't too much difference, but it is there.
I see guys with carbons out shoot guys with aluminums all the time, and visa versa. You can't blame too much on a possible 3.5\1000" difference in straitness.
I also like to keep in mind that canbons bouce back so to speak. If you step on a alumininum it is most likely bent or broke. A carbon is eaither broke or still strait, most likely still strait. I have stepped on carbons I have seen them shot and bounce off trees, floors, and walls and live to be shot countless more times (I have worked at a sport shop for 4 years

). I can't say this for aluminums. Everything is a compromise

[8D]
I'll stick with my carbons