Right, @TCLion has it nailed that the sample size is really too small to make any sweeping generalizations, but he has shown some patterns so far, which can really be seen in a couple of great threads floating around in here:
Those both give a thorough understanding of the type of GM Brad has been so far. He likes athletes at high-value positions more so than pretty much any other GM in the league. But again the sample size is small and those tendencies could still change given the right circumstance.