Since launch of the UC3 stats, search has gone through logging into PSN before you were able to take action looking up your friends and competitors. There were a few reason for having this user flow at the time, but today I have updated the search of UC3.
No longer do you need to log in to view a users stats.
No longer - if you want - do you need to go to the search form to view a users stats.
First off, you still need to log in to view your own stats, reason for this is PSN login is the only way I can predict its your stats to show.
So the update for search goes as following. If you like the current flow, you can still input a users PSN id - case sensitive - into the form and view their stats. For those you know those they want to search you can now just append the user PSN id - case sensitive still - at the end of the URL and their stats should appear. You don't not need to be logged into naughtydog.com to search a user anymore.
You can view my stats without logging in just by going to this URL now:
This also allows for a new addition that I know people have been asking for and that is bookmarking your stats.
And by the way, my stats say i'm at level 75... but i just leveled up to 45... i don't know why it does that.
Because for the first 3 legacies it takes 2.5 million to hit 75, but the new legacies take more experience but the online stats use the money value for the first 3 legacies