No. In 4-3-3 you have 1 striker and two wingers without any defensive responsibility. For example, Barcelona have Etoo(Ibra) as a central striker and Henry/Messi on the flanks. And in midfield they also have Iniesta. That means that they have 4 offensive players on the field. And also, there is Xavi who is a deep lying playmaker and thats another thing you miss in our 4-3-1-2.