Guild Wars 2

First off both my guardian and warrior are equally fun classes to play ( both 80). I just need some guidance on which class I should Gear up first.

My focus for both characters is to excel in WvW ( no solo ) and Fractals from lvl 20-30 ( not planning to go further).

i just need some insights on both classes and why you would choose one over the other, not because its funner but its overall potential in both areas.

I would typically gear up your Guardian for Fractals and your Warrior for WvW. Why? Because Guardians are more requested in Fractals, and so you can gear your Guardian for Fractals, then focus on Warrior for WvW, then switch back to gear your Guardian for WvW.