Lag and the amount of time it took to just get to the menus I needed to play online. I never played xbox 360 but enjoyed online play for the original xbox. I found myself hardly ever using my ps3 because the online play was such a hassle. Not sure what the differences in online play between the 2 new ones are , but something like that is more important to me than some of the specs talk that I probably won't even notice.
I have mainly been playing Battlefield 4 a typical start up would be.
1. Turn on ps4 load up maybe 10 seconds or so
2. it auto signs in to psn 5 secs later.
3. Click on the BF4 tile the BF$ load comes up for 4-8 sec then the hit start button
4. hit start and you are on the main menu
5. When you hit multi you go to the quick, server search of test range
6. I generally hit quick match choose a type and you are put in The wait is in general 15 secs before you are in the game it can be up to 30-40 secs if you catch a ending match and have the 30 second intermission to sit through.
Blacklight retribution is a little faster because it doesnt have as many menus to go through.
Small sample size but it seems quicker to me, but I don't think I had the issues signing in on the old system that you did, hope that helps.
One on PSN is very stable, I have not been disconnected from PSN yet but I have had several Battlefield crashes.