There was a very long discussion over on the F16 forum re carbon v ali beams. In general use there really was not a lot in the strength and tensile differnces. Wouter went into a very detailed analysis with lots of facts and figures to substantiate both sides of the story.

However a lot in street cred and a lot in your wallet may be the deciding factor.

Don't knock dolphin stikers, they do have other benefits other than tension support of the beam, I use mine as the place to put my foot on when climbing back over the front of my F16 after righting the boat, really miss that on my A which only has a carbon beam.