In the 2002 paper linked to in post #106 he wasn't able to detect any heat. Is he able to detect heat now?
That leads me to interpret him as saying that at least one of the transmutations has been observed to produce significant heat.
Sorry -- my imagination doesn't carry me beyond that... I suggest you watch the video for yourself -- even with the audio off if you can't follow Iwamura'a "JEnglish" -- because his slides are primarily where the information resides...