This duel is getting really bad reviews. That's not fair, though.
It is criticized for the following:

1) It's shortness. It's not short at all. It's 2 minutes long and that's more than enough...We don't want to be another Mustafar Duel, do we? (no)

2) It's slowness. Well, the truth is, it's the slowest one in the whole saga. But that doesn't mean the duel itself is bad...It has good dialog and great direction.

It is definitely the least favorite duel, and Lucas tried to repair the mistakes with the Mustafar Duel, making it funnily fast and super-duper-boring. In a way, the duel on Death Star is better than the one on Mustafar. It is more emotional and
well-written.

It's a good duel overall. Although, to be honest, I prefer the one on Mustafar, although I made fun of it. The only reason I did this is because it is way too overrated.

A good article:
http://starwars.wikia.com/wiki/Rescue_on_Death_Star_I

Other entries:
http://blogs.starwars.com/saberb/1
http://blogs.starwars.com/saberb/2