The stat range of secondary stats for Level 20 Armor is 75-100. The stat range of the new 20.25 armor is 76-101.
Again, keep in mind this is the armor that was in theory supposed to be in the game “from the beginning”. Like in theory this should have been available the same day the game launched (if we had done a traditional launch not Early Access). So if you have been grinding mobs a long time already and gotten good gear it may not seem like much of an upgrade, but to a freshly-minted 20 this is good stuff.
The Shard Dungeon Armor/Weapons will be Level 20.25 - Level 21, so that will be more of an upgrade.