Of course the whole system power isn't dramatically different, it's the whole system. And how about higher external heat dissipation requirement? Plus dissipate from case.
And the PSU angle is clutching at straws.
The whole system power is ultimately what is going to matter - whether CPU or what is using it 99% of that energy is going to be turned into heat.
The PSU angle is largely clutching at straws except in the case of the 14900 where even with conservative power limits it can use dramatic amounts of power, in reality if you look around forums, etc. in most cases people are still speccing up the same kind of wattage PSU at a given performance tier whether buying an Intel or AMD system anyway so it is largely an irrelevant point.