Hernandez has forced his way into United's starting line-up in recent months ahead of the Premier League's top scorer, Dimitar Berbatov. And the Mexico international is relishing the chance to play alongside Rooney.
"I always used to admire Wayne from a distance. Now it is a pleasure to play alongside him. Our relationship is perfect," Hernandez was quoted as saying by the Sun.
"Without doubt Wayne is one of the best forwards in the world. Wayne is better than Lionel Messi - at shooting.
"And better than Cristiano Ronaldo - at heading. All their styles are different but Rooney is a super class."
On his own superb start to life in the Premier League, he said: "Today football is not only about technique but physical preparation. I run many miles and work on my muscles to increase my speed. In Mexico I developed a similar system, although it wasn't so intense as here.
"The physical power is key to triumph in England. Only by making sacrifices could I have achieved something that seemed impossible when I arrived last summer. I wanted to learn and to take my chance when it came. Never did I imagine this success.
"Back in Mexico I used to watch the Champions League on television. Now I'm part of the best club competition in the world. We have a great chance to make the final after beating Schalke and Barcelona are favourites to be there as well.
"Everyone wants revenge over Barca for the 2009 final defeat and it would be magnificent to get it at Wembley."