@Nutrix, although I'm not an official GP member, I suggest that the comma shouldn't be there. I know it seems awkward to have such a long sentence without a comma, but the comma that you placed seems to break the flow of the sentence and isn't required. Correct me if I'm wrong or missing something though.
Sorry, but that comma doesn't need to be there. Something along the lines of, "Alternatively, Landorus can simply choose to run 252 EVs with an Adamant nature, allowing it to outpace Adamant Heatran and Timid Lucario at the cost of some bulk."