The weapons and armor with "flavor" are exotics. These have been updated to blend with current armor and weapon levels. Any other perk on gun or armor from VoG can be found on new raid armor or vendor/drops armor or weapons. That is besides the Oracle and Praetorian buffs... but these are specific to the raid anyway. The same goes for Crota's End gear. People aren't going to say "Gosh, I wish I had those buffs for Oversoul's Gaze" when they are running the House of Wolves raid.