This is very disappointing - if Mizuno cannot replicate his own previous R20 results (the COP has dropped from a claim of nearly 10 down to 1.3) then its very unlikely that anyone else can - and TG obtaining and publishing such a negative result would probably put an end to LENR research for good. But the transmutation data obtained by SPAWAR or by Mizuno's earlier work?
I am not disappointed. It is much better than it was a few years ago. Most meshes did not produce any heat back then. This one started off with a 30 W bang. That would have been a fabulous result a few years ago.
The COP is meaningless. I suggest you ignore it.
Mizuno did replicate his own results, although there is not as much heat. It might improve. This is a positive result, and very interesting. If anyone could get 30 W the whole world would be convinced cold fusion is real. The actual level of heat doesn't matter.
If you think that cold fusion is so easy it produces the same level of heat every time, you don't know anything about it.