Is the add-on telling me lies?

REFERENCE:
https://forums.askmrrobot.com/t/prot-paladin-is-this-ok-over-capped-on-defense/12768

No, it is not telling lies. You have 77 resilience which is roughly equivalent to "154 def" therefore helping you with your crit immunity. You might want to read up on how resilience impacts crit cap.