[Stylite]

Buzz,

I can see what you are saying about going with A2 vs. AJ, in hand 2-2, especially against an unknown range. Your analysis looks right. What bugs me about the small blind's line is his check call. Unless it's an odd slowplay, it defines his range as something he doesn't want to get rid of yet (especially heads-up) but the holding isn't quite so strong. A6-AT are good candidates. The question hinges on whether those specific hands show up often enough vs. the rest of his range in this situation. If not, then A2 would be more correct as you pointed out.