The gripe is not that consoles are less powerful than PCs. The gripe is that many games are designed around the limitations of consoles and don't take advantage of all of the power in a PC.
If you would read the very next post in the subthread, (here it is), it has a reasonable response to that gripe. Here, I'll quote it for you:
I'm looking forward to the optimizations and the fact that they'll be the same architecture as discrete cards. Hopefully that means game developers will allow their games to scale more since it shouldn't really be much work and they don't need to port them.
If that's hard to understand, I'll explain it. The console GPU architecture is basically PC GPU architecture, even though it's not quite as powerful as the best PC graphics cards. So the effort required by the game developers to use better PC hardware is hopefully low since it should be a pretty natural extension of what they're already doing for the consoles, as opposed to something totally different like it was for the last-gen consoles.
The OP then acknowledged this point, but then again complained about the lack of GPU horsepower in the consoles and compared it to high-end PC GPUs. I didn't really understand this to be anything other than complaining about the consoles being underpowered, since it basically ignored the response. What else is there to do at that point besides acknowledging the OP's complaint at face value and offering an explanation for it?
Does that make sense now or do you want to have another try?