There kind of is more of a connection between them than some are acknowledging as Skrillex first started getting a lot of attention opening for Deadmau5 and some of his first stuff was released via mau5trap, Deadmau5's label.
I found deadmau5 first and his album Random Album Title helped me finish a big essay I was working on at the time. Plus I really enjoyed that YouTube video of him playing Ghosts N Stuff in a huge club in Toronto. So, I am definitely partial to the work of Mr. Zimmerman and have seen his antics live twice whereas I've never seen Skrillex perform. Skrillex's stuff fits Burnout Paradise PERFECTLY though, but then again, Deadmau5 makes the time trial mode in Mirror's Edge way more fun. But Skrillex provided music for Spring Breakers, one of my favorite movies of 2013. AND that song he did for the Mortal Kombat album was PRETTY good.
But I love silly masks. So Deadmau5 still wins. And I've quite enjoyed both, and its cool that some of you haven't, but I have. Don't like Minecraft though, and Mau5 got weirdly obsessed with that.
Sorry. Mau5.