Guardian vs Champion to very strong contenders but who would win in a pvp winner take all fight to the death.
The Guardian has heavy armor and wields a heavy shield.
But the Champion also has heavy armor but instead of wielding a heavy shield the Champion wields a two handed axe.
Guardian vs Champion shield vs axe who would win.

I'm divided these are two great classes. The Champion would probably be the one to start the fight by swinging his great axe at the Guardian. But then the Guardian would probably block the attack with his shield. Giving the Guardian round one.