It was sort of HDNet and EventMagic.com's fault for dropping the ball on this. Had they had picked up Dynamite! it would have been money for everyone, but they didn't.
I hate when broadcasters are iffy about picking up certain things.
Anywho, I completely understand why the numbers are so low. Tanigawa has said himself that the interest in MMA has dropped significantly in Japan over the last 2 years.
But it's crazy to see last years K-1 ratings being so high even though they were on at the same time as Yarennoka.