Army of One is the odd one out from the no-ally package including Ronin, Stand Alone and In Harm's Way in that it does not explicitly benefit a high DEF strategy. The Best Offense... bridges the gap as it lets you use your DEF for your THW or ATK, but you are taking a chance that you draw these at the same time. Readying for 2 ER is generally not worth it only to thwart or attack for 2, but it becomes ok with a stat of 3 or if your hero has other incentive to ready. Quicksilver and Drax come to mind as heroes with large stats and resource rebates for readying (though playing Drax without Mantis sounds tough). Hulk and She-Hulk reach high ATK values that justify the cost on its own. Don't assume that any deck already playing Ronin, Stand Alone, and In Harm's Way wants this, but certain heroes will, and in fact might even be pulled into the archetype because of it.
