In all honesty, I think it's just a matter of 2013 being the more productive 2006. They are only playing festivals for the most part, so I don't think they see a need to release the DSP's. If they continue this trend for 2014, then I'll be worried.
I have! I'm also fairly certain I've seen Soul do it too, but you're right. Most people's idea of an amazing set is anything from HT and Meteora, + QWERTY, Blackout, LITE, and VICTIMIZED
We also don't know they didn't play it. We had about 10 minutes starting with COG where we didn't know what was going on in the show. They could have randomly decided to play fucking Forgotten and we wouldn't know.