Please let's not shed too many tears about this, ha ha. EISA is a sham award. The so-called EISA gets royalties and licensing fees when manufacturers use the logo in their advertising. That's why they usually try to spread the love around to as many manufacturers as possible by creating a ridiculous number of sub-categories. Maybe they found out that Pentax wasn't interested in buying an EISA award this year, so they didn't award one.
Maybe Pentax already blew all their marketing budget by running a single ad in some magazine earlier in the year.

Or maybe they're still recovering from the large purchase of whiskey for their booth display a couple years ago.
Another theory is that Pentax is sitting out this year in order to make a big EISA purchase when their FF is released.