Kakashi wins.....
Raikage is fast and strong but he isn't such a genius, Kakashi would just outsmart him....

This is how its going to happen, Raikage attacks with his speed, Kakashi didn't keep up with him and got hit...Puff!!!... clone disappeared, Kakashi joins the battle again and this time Kakashi will analyze Raikage's ability and Kakashi is far more than Sasuke at analyzing skills:flaw:,few more clone disposals and KAMUI from nowhere

, Raikage doesn't stand a chance when its a forest, Kakashi can conceal himself so better that only sensory ninjas can detect him.........
I'm a Kakashi fanboy but Raikage on the other hand I think too strong for Kakashi but strength only doesn't count in a fight Brain>Power.........U_U