Well, even though I disagree with the Jay at his best is better then what Ryan could do at his best, Jay still can be very effective is held under control.
As for Jay not being a vocal leader, he does not have to be that type of leader, he just has lead with his actions. AS for being a tactician, how many QB are really good to great tacticians? Gase will do that for Jay, and make sure he is prepared every week.
Not having a great defense? Neither did the Raiders really until they started playing like a great defense. Miami's problem is not talent, it's consistency, and if they can put it together, they can be a good defense.
J-Train not being Marcus Allen? No he's Jay Ajayi, and if he has a 1500+ yard season, with again 2 or more 200+ yard games, will/should anyone have a problem mentioning his name along with Marcus Allen? We still don't know how good Jay will be, odds of him being as good or consistent as Allen are not great, but there is also a chance Jay could end up being better then Allen.