It's something who bothers me a lot! Although Thor is capable of a lot of things... in theory... in fact, his hand to hand and more generaly, his close combat fighting techniques are portrayed in a way which does a disservice to the character!
We can assume that as god of war and heir of the throne, he's been training by the best warriors of Asgard! Incidentally, for those who watched "Thor Tales Of Asgard", it was the case. So why choose to show him just "stands and bangs"?
Feel free to point what you don't like, and what you would have preferred him to do!