I agree that Anakin's power and raw potential should have been showcased more then it was. I don't think that he should have been downing space crafts with his mind or anything, but I also came away from the movie thinking, so what's the big deal with Anakin anyway? Palps, Yoda, Windu, and even Obi wan come off in the movie as more powerful then Anakin.
In the Obi wan fight, all I saw was two evenly matched Jedi's fighting, and Obi wan coming out on top by using his brains. Offense fights defense, and defense wins. I was expecting that fight to look like Anakin was man handling Obi wan, and Obi got lucky or something. But instead, Obi wan, being the defensive fighter he is, took everything Anakin had without too much trouble. Even the force push was even.
Nah I agree, Anakin should have been portrayed as stronger. The temple scene could have done that. Instead of images of Anakin killing Jedi's, actually show some of it. The only killing of Jedi's in the movie was from the clones after order 66. They should have showed Anakin doing some of it instead.