Also, a 120 synced is often much stronger than a 119 of equal ilvl of 295 generally in healing and/or damage. More along the lines of a semi geared 119.
specific stacking az traits and im pretty sure essences add something are why 120’s syncd do better than average joe leveling. average joe might not have 3 azerite pieces by level 114. if so i doubt they are complementary or stacking. i did a bunch of research when partysync came out but that was before the cloak. the first time walking event dungeon after essences were added i noticed 120’s we’re keeping up with my geared twinks with double set bonuses legion leggos and triple gem gear. maybe its as easy as turning off the cloak since their corruptions don’t work when synced.