You can not simply do BGE brick = Armory node. Armory and BGE have very different visual logic editors. In Armory you might need to use 5 node to get about the same functionality as one brick, but when you understand how these nodes work you can do much more with nodes in less time than with bricks (imo I kinda hate the way BGE forces me to have these three columns). Here a couple tutorials on logic nodes:
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