A response to this thread.
Name says it all.
I won't put any real definition on these, just go what you think is best, make your own explanation.
For me its gameplay.
In the long run, this is what makes the game playable in the first place, where it allows us to do a replay over again.
A game that has high graphic and realistic looks yet has a crapastic gameplay really isnt a good game overall IMO.