Yes, at the end of the day, if each of the big 3 had all their games on PC then their consoles become pointless to the vast majority of gamers. At the end of the day, it really comes down to exclusives. Now if all games were available on all platforms, I'm not so sure. Price-point/value and convenience would win and that could give the edge to the PS4 if you ask me.
I think the point is that PC = X1+ as all X1 games going forward are a subset of PC games but not all PC games are a subset of X1 games. If what you care about are games, then yea, a PC is better. There are still multimedia and convenience reasons to get an X1 (especially the X1s) but a lot of gamers just don't care about that stuff, and that's why people are reacting the way they are.
4 ≈ One
