i've been noticing this from the browser stats - every time materno joins it's two of them? always just one when in-game when hitting tab for scores...he's the only one i've seen like that so far.
Battlelog is a free social platform that ties into Battlefield 4 and Battlefield 3 and lets you socialize, track stats, plan your next game, and more from your web browser!
battlelog.battlefield.com
This is the other account (where you cannot view the profile page), that last played four months ago:
Battlelog is a free social platform that ties into Battlefield 4 and Battlefield 3 and lets you socialize, track stats, plan your next game, and more from your web browser!
battlelog.battlefield.com
I guess the second account was a trial account, thus it has the same name despite a unique ID. The reason it shows twice is probably a bug/error somewhere in the system of it not knowing which profile to show (assuming it fetches by name). Regardless, I don't know the actual reason there's two. Neither have any infractions or bans though, so as long as they behave I guess it's ok. ¯\_(ツ)_/¯