Well, depends. Consoles have a lot of advantages. Comfort, screen size, ease of sharing experience with family and friends.
If you don't care about mods and that extra 10% graphics (or however you define the ratio of superior PC graphics to next gen console) boost from PC, then console is arguably a superior experience.
It's a tradeoff and each has advantages.
Oh, Sard, why do you do this?
To the discussion at hand... "The best experience" and whatnot - it's a bit silly, IMO. The best experience for a console player will certainly be on a PS4 Pro or Xbox One X, because those are the best systems available to them within their chosen platform. Everything is the same, except performance, so... objective upgrade.
There's no "best experience for everyone," unless everyone was willing to jump through a few hoops with PC (just because it offers the most options - you can play on your living room TV, on your couch, with a controller, but it requires some setup), which they aren't, so... moot point.
Whether people want to admit that or not, both consoles played a significant role in The Witcher III's success, so it is very important to show good performance on both machines. Now, HOW they will achieve that with a game of such magnitude - one can only guess.
Yes, this is correct. The PC gaming market is not as small as it once was (that's why people even bother porting games to it), but we are only one fraction of the overall market.
Even if, and this is probably a very generous guess, PC gamers made up 1/3 of the market, we are still in the minority. Not compared to Xbox or PS4 players alone (again, generous guess), perhaps, but compared to consoles in general, which have similar hardware and optimization requirements.
A AAA developer likely cannot afford to ignore such a large segment of the market, and they must make games that run well on those systems, so us PC gamers do end up with games that don't look quite as good as they could, but so what?
I'm not so elitist as to think my market should come at the cost of everyone else. Unlike some (who aren't on these boards, for the record) who like to rub console exclusives in everyone's face. "HAH, bet you regret being a PC gamer now because you don't get to play Red Dead Redemption 2! Nana nana boo boo!"