I watched Jackass one and two.... they were funny I laughed and enjoyed them very much, but in this movie I just couldn't help myself I was in hysterics the whole time. It had a better concept. An actual story line. Jackass was a bunch of stupid stuff crammed together, although enjoyable I would hardly call it a movie. Less 11 commandments had a general story line. It tied all they're stupid stuff together to make an enjoyable film.
Another difference is that in this movie there was more comedy. It wasn't just guys hurting themselves and doing vulgar competitions it was comedy and pranks. It was more fun less grotesque competition to out disgust one another.
So if a bunch of random guys being complete tools is your kind of humor then you'll love it, but if your too 'mature' for that kind of comedy... well then obviously it won't appeal to you. It's logic man.