I don't see how it's valid given that they are interchangeable. You can play a PC on a TV from a couch.
That said, TVs are nowhere near the resolution of a monitor (FYI I use the term to mean "pixel density" like it's supposed to, not the actual quantity of pixels) and laying back on a couch is going to lower performance when it counts (like intense online gaming).
As for controllers, well, sorta. I use my PS3 controller on my PC all the time - most recently for Alan Wake - but I also get the M+K for shooters which is far superior than a thumbstick. So, console is at a disadvantage there.
But really... the main difference as far as gaming goes is graphics. And availability of games (at whatever price point). If that matters to you then there's only 1 choice.
That said, TVs are nowhere near the resolution of a monitor (FYI I use the term to mean "pixel density" like it's supposed to, not the actual quantity of pixels) and laying back on a couch is going to lower performance when it counts (like intense online gaming).
As for controllers, well, sorta. I use my PS3 controller on my PC all the time - most recently for Alan Wake - but I also get the M+K for shooters which is far superior than a thumbstick. So, console is at a disadvantage there.
But really... the main difference as far as gaming goes is graphics. And availability of games (at whatever price point). If that matters to you then there's only 1 choice.