A game's length shouldn't have any impact on its quality as a game and its artistic merit. Neither longer nor shorter makes a better game. Though certainly there are games that I wish had been shorter as the second half of them were less enjoyable than the first (hi FFXII) though the obvious solution to that is having good pacing and a consistent product throughout.

What it does impact on is its value as a product for us, the consumer. Assuming the Order is of equal levels of fun to Skyrim, why get 5 hours of the Order at $60 ($12 for each hour) when I can get 80 hours of Skyrim at $15 (A shade under 19 cents paid for each hour)? You might very well have created a great product that I would love to experience, but I don't find the value in what you're asking so I'm not going to put the money down.

A short campaign isn't necessary a death knell. Do you have multiplayer? Do you have co-op? Are there different endings? Different playable characters? Are there secrets to uncover? All of these elements add value to the product you're releasing.

I think releasing a 5 hour game for $60 is both arrogant and anti-consumer. But then if there are those willing to pay it and Sony make a profit then maybe they do have the right idea of it.