#3 Argentina would win a World Cup
Perhaps the Lionel Messi of current reality has never tied his boots to play for Argentina without a heavy burden hanging over his shoulders. Persistently accused of being exceptional exclusively for Barcelona, Messi has been repeatedly let down by teammates as well who are always a step down in quality from his club level counterparts.
On the other hand, if Messi had played for Arsenal, he would have been more suited to the tactical demands of the national game. With less reliance on the presence of world-class teammates at club level, a resurgent Lionel Messi would dovetail to devastating effect with the likes of Gonzalo Higuain and Sergio Aguero – and the 2014 WC final that had been lost by the finest of margins might have had a different story written on it.