On a serious note, Messi has major anxiety issues. Evra is right.
Messi doesn't like the limelight or attention like Ronaldo. Messi just does his ting and keeps his head down. Barcelona is a team full of big players...the pressure isn't always on Messi... Argentina is different.
Guy doesn't like doing interviews and u can see he's a bit awkward.
That's why Ronaldo thrives in these big games. He loves it being about him.