IGN posted two articles about Warrior and Guardian profession preview some time ago.
There is a gameplay video in the article, we may see some different things which I think we can't get from the official announcement and trailers. It looks much fun to play this game by players themself.
You can visit IGN and check out the warrior gameplay video: Playing the Warrior in Guild Wars 2
Then about Guardian, the author concluded, Guardian is a support profession with some serious offensive skills. Here is the gameplay video:
Are these two classes of the articles the same as your expect?
Do you have the same ideas as the authors' about Warrior and Guardian?
No matter you agree with the author or not, I think you must want to play GW2 right and prove your point, right?
It's much better if I could experience it by myself but not read others' opinions :(