You realize that AAA is used to refer to the budget, scale, and expectations of the game, right? And that it's more of a reboot than a remake, meaning it's probably not going to be an arcade style game. They're talking about their aims for the game, and trying to justify charging $60-70 for it beforehand.
If Rockstar made a fully-fledged open world Crazy Taxi game with the scale and quality of Red Dead or GTA, that is quite indisputably deserving of the "triple A" label. Putting aside where you draw the line for it to be considered AAA, they clearly mean that their goal is an AAA experience. It's not that deep.