I think they would bounce hits.

The way I've been led or perhaps misled to understand it, is that they might use ABs, they might use missiles, they might farm you. The plan is not just like a 1:1 retal that bounces if you have defense. It's far far more random than that.

So like if I hit a techer bot, and roll a 1 on a d20, it will flatten me with all 60 of its missiles. My sdi will stop around 40 haha.