Here is an interview with Aaron Larson:
http://www.startribune.com/video/64688382.html#/64688382/video/1/
This is worth watching for many reasons. But it does seem to answer your question about the questioning of the children of their ages. Aaron's story here seems to align with your version #1.
I had watched this video once before, but could not find the link again, so thank you.
I find it rather interesting that Aaron seems to think that there was a 50-50 chance that the abductor could have picked Jacob or himself.
After reading through the facts of the case initially, my gut reaction was also that it was the luck of the draw. Since Aaron and Jacob were both eleven, could it all boil down to Jacob being the last man standing so to speak (Trevor and Aaron had already been told to run).
On a side note, I have not been able to find any definitive information about the pizza delivery to the Wetterling home. Does anyone know if the pizza was delivered to the house while the Wetterling parents were still home?
Prayers to the families in Oklahoma effected by the tornado today...