If you RTFA, it does mention the Unicomps and give a reason for preferring the CM Storm Trigger. To wit: "Because, let's be honest: the Model M is not a pretty keyboard, and its Unicomp successors also won't be winning any beauty pageants. None of those keyboards have the same array of gamer-friendly features, like macro keys, as Cooler Master's offering, either."
I have a recent Model M here (in the black, Mac-optimized version) and I like it a lot. I'm no die-hard gamer, don't need macros, and I don't enter my keyboard in beauty pageants. It would be nice if they could build a USB hub into them, though.