[Veritas]

As Eru said in the Silmarillion, the elves were created 'looking like' the Valar, beautiful, smart, magical powers, immortal etc. But the men were mortal, driven to discover things, and more influenceble than the elves, who were more 'at themselves'.
The elves knew much more, but the staid more at home, never showing themsleves. The Fellowship of the ring were almost the first non-elves who entered Lothlorien.
The men were more expanding people, with great empires like Gondor and Rohan.
There is thus a great difference between elves and men.