Okay, so what game logic drives the decision regarding what weapon you can offer Windmill? I did this twice, and both times I could only offer him my silenced, capacity-upgraded, damage-upgraded pistol. Now we get here with Josh and we can only offer him the revolver? Gah! Will he only accept your #1 weapon? Or is it random? Or will he only accept sidearms? This was a very frustrating part for me, not just because of the restrictive choice, but because of the words (attitude, really) the game put in my mouth for saying no.
And as we said in the episode: The bad guys are very, very stupid here. Accepting that they have unlimited power and no accountability, this public murder spree is just a bone-headed way of going about things.