Why is the newer early 2013 refurb rMBP cheaper than the mid 2012 one?

See the attached screen shot. The two rMacbook Pros are exactly the same except for a slight difference in processor speed and one came out in June of 2012 and the other in February of 2013. Any ideas why the newer, faster one is cheaper? I've heard about some screen issues with the 2013 rMBPs so I'm not sure if that is why. I would rather pay less for a newer machine but it just made me curious. Hopefully you don't all run out and buy up the newer one before I can order it

 

That makes sense and could also support my hypothesis in my original post since they would have a lot more of the early 2013 refurbs if they got a lot of them back due to screen issues.