Look if some one thinks it is going to be game of the year,then let them think it,i think it will be too,from what i have seen and played of the demo that is only 5%,it is great,and i will not get bored of it either,i get bored of games quick,but i dont feel that i will with MGS2.
And also if people are getting that much enjoyment out of a demo,then i think that is great,and you shouldnt nock it.
Also so what if they beat it in 3 mins,i could beat it in 3 mins if i wanted,that doesnt mean there is only 3 mins of gameplay,because you can take different routes,through the ship.