Messi - ronaldo messi - ronaldo messi - ronaldo why is there a third one???

there are many comparing to them..we talk about only them because both of them play in same country and at same positions.........Pique is best at defending......Rooney can be compared too.....Casillas too at goalkeeping....and winger such as Villa , Pedro, Nani........we have great mid fielders such as Gerrard, Lampard, Xabi Alonso.......and all.....we just talk about these two because they involve in many things..... :):)