in the period 2008-2012, Xavi and Iniesta won at the club level everything that Messi won + the World Cup + 2 European Championships.
So did Sergio Busquets, so did Pedro, so did Pique, so did Puyol, so did David Villa (after he joined). You are yet to explain how Xavi and Iniesta are personally better players than Messi. Football is not based on your perception, but on reality.
Messi completely failed without them at the 2010 World Cup and was an ordinary player at the 2011 Copa America. But during this period, Messi received 4 Ballon d'Ors, and Xavi and Iniesta zero 
Messi has won 3 balon d'ors without Xavi and Iniesta and 2 without Barcelona.- Jay -