As of right now I don't have all the technical data, but I'll take a shot in the dark.
If I run the numbers the way I normally would, the Dual Cam Patriot I come up with approx. 278 fps. at the specs you've given.
The Tall Brace (6.75"
Black Knight 2 would be approx.288 fps.
These numbers are very rough numbers. I tried to keep my numbers in so if I figured right it really could be on one side or the other of these numbers.