Thank you for the detailed answer. I am aware of that, but i would like to know if there's a higher risk of playing "psn only" games ("mk arcade collection"in my case) which don't belong to my account and installed as a pkg. I know iso back ups makes it seem like playing a Blu-ray disk, but some games are psn downloads only and could be played if they are registered purchase on your account. does sony have a way of detecting this?
I read the online is still active and i have been itching to play mk2 and 3 against real people.
Edit: for anyone wondering, it's a quick way to ban yourself, sony would check if you legitimately bought the game or not when you launch/synch trophies. On iso, it would seem like you bought the disk, so less ban risk.