The big difference according to Biden is admissibility. For those who never had a visa to start with, never crossed at a port of entry and snuck into the country get special treatment. It is indeed a slap to the face for folks who came legally but overstayed or never overstayed at all or the ones that risked everything to leave and return. It’s a total reward for intentionally breaking the law. It’s also pretty toothless in the larger scheme as no more than 500K illegal crossers would qualify and non after 2014 would be considered. Pretty weak EO for immigrants and advocates.