I'm quite sure at least half or more. Simple (seeming) math....100-150 posts....10 random drawings....I'd call that some pretty bad luck
I could be wrong, but I really doubt it was an RNG situation.
"spicyhotcoffee" had one qualified post, and she won.
But hey, I'm happy for the winners... and Halo is awesomesauce and gets my jooz purchases regardless.