From the specs i think the cree is a better choice. the cree one has a different spectrum of colors which is better for corals. plus more LED's which means more par. maybe not have the intense functionality of AI's but it'll do what you need it to do, and when i mean intense i mean like lightening storms and crap.
I may be wrong but I think the fixture in the link only uses 50% Cree LEDs, and has a disclaimer that the ratio can change without notice. That seems a little shifty since it's advertised as a Cree fixture. I'm not saying it's a bad fixture, but it's a bit of a red flag for me.
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