Baggio actually had inspiring performances in the world cup. Messi has mostly disappointed with Argentina in knockout competitions. I'll give him the benefit of the doubt in WC 2010 but in 2014, by his standards, he was woeful.
I can't think of a single iconic Messi knockout performance in a big international event. All other great legends of previous era's had some.
Stats wise its good but his NT career is hardly anything extraordinary. This Copa is probably the best he performed in an Argentina shirt.