How can you possible know that?  I suspect it's more because it's the regular writer, and it has clear tie-ins to the current story.  

I don't think numbering nonsense effects sales much.   Sure, #1s sell more, because people like 'jumping on' points, but to be honest I think most extra sales of #1s are speculators.   In 5 years, once it's clear none of these re-boots hold any value, #1s will stop.