•PS3 Console1 *and* PS3 Console2
you can activate 2 consoles as License Holders where it's possible to play ANY game bought with ANY account as long as the account used to purchase Game X is present on both machines, even with the console offline.
•PS4 Console1 -holds the original purchase license
On PS4 you can have only 1 console as the License Holder, which is where account X has made the original purchase and DL the game for the first time: on that console, every account present (you, brother, gf...) can play the game, both online while signed in on their own accounts or even offline.
•PS4 Console2 -doesn't hold the original purchase license
Account X can also sign online to DL and play the Game on a different console. *BUT* only Account X will be able to play his Game/s on a different console (which doesn't hold the original purchase license