Since Defense is so valuable for a Guardian tank, your BiS is generally 2 EWH passive Defense relics. No tank should *ever* use the EWH Shield relics: you get all the Shield rating you need on your gear naturally. If you undercut your Absorb rating a bit (some of the Guardians I know do this to get higher Defense, which generally pays out well because of Guardian's low Shield chance), you can get an excellent payout from the DG absorb proc relic.
Hi. Noob tank Guardian here. Could you elaborate on why that is true? I've seen that you said that JGs get a lot of skills that help defense. Could you be more specific?
It'd help my understanding quite a bit.