I actively played the game since day one, in fairly regular intervals, so the playtime is more or less evenly spread out.The amount of hours doesn't say much about having played it.
You could have just had it open. But more importantly, if you played 300 hours in the first month, your experience is vastly different from someone who played 300 hours in the last month, or someone who played 300 hours across the 2 years of development and also has 300 hours in Warband throughout its early access period. Though in the last case 300 hours would be rather little, considering what the game actually is, so I expect it's one of the first two options, or someone with a very casual experience throughout who doesn't really know what the game is and just isn't into the genre so much, but then you wouldn't be on the forum I suppose.
But all of that is pretty much irrelevant. The game is not finished, and you could just as easily tell after 30, or even 3 hours of gameplay. So saying that TW could reasonably tweak a few things and call it a day is, to me, ludicrous.