You can't really say that Snakzz... better in what sense? More fun, that depends on you. Better at farming? That depends on build etc. Each class has their ups and down, there are no flat out "Better" classes. You just need to give Crusader a go and see how it plays for you.
I've heard mixed reactions in the forums regarding the Crusaders toughness. They don't get the 30% reduction because they are considered a mid-range class. Personally, I wish they had made it a really tanky class in design. All that armor screams come hit me a lot. I know that the shield will make up for some of it, but I was really, really hoping I could make a tank that just stood there and laughed while Elites tried to smack me around.