RMS/Total Power Specs discrepancy YAMMY RX-V 863 HTR 6180

[Collectors Set]

This issue was raised at the bottom of another thread but got no traction because for one its not really placed in the correct forum. But I am hoping someone can come up with some insight.

If you look at the most current Yamaha RX-V models which are the 863 and 663's, there is a significant jump in price between the two. According to the Yammy specs, the RMS power at interval levels 20Hz-20kHz on the 663 is 95W per channel or 665W total and on the 863 its 105W per channel or 735W total. Makes perfect sense to me and I can understand the jump in price since you are picking up nearly 100W of additional total output power on the 863 model.

However on their identical counterparts in the HTR line; the 6180 and the 6160 -- the HTR 6180 has the same total power rating of 735W as the RX-V863. But for some reason unlike the RX-V663, they rate the HTR 6160 at 20kHz @ 95W per channel and additionally with 1kHz output and assign it with values of 110W per channel with an overall total output of 735W. Now I understand that the 1 kHz level itself may be just a derivative of sorts or a different look so to speak and all relative, but in the HTR case, the 6160 and the 6180 models have identical bottom line total output power ratings of 735W.

So what is the deal then?? Does the HTR 6160 in fact have the same total power rating of 735W as the superior $400+ more HTR 6180 and the RX-V863 models ------ which is nearly 100W more of total power than its counterpart equivalent RX-V 663 at only 665W