The original Rocky appealed to the ordinary guy who wanted to make something of himself. He got an average looking girl to root for him, and through an ordinary tough guy profession, became a winner. Not only that, he wasn't too bright either, so the audience it was appealing to wouldn't be turned off by his intellect.
Now Stallone wants to appeal to old farts who, based on their past and long forgotten glory, want to recapture their youth and beat some young guy. The segment of the population this is going to appeal to is smaller yet. How desperate can this idiot be? Can't he think of something original and make a different movie instead?
And in ironies of ironies, seemingly unaware of the image he wants to avoid but can't help portraying, by making this movie he is really telling everyone he's a has-been.