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Many people have completely stepped away from MAG mainly due to its online issues. And MAG is still plagued with random server disconnect issues, and game queues that you can honestly walk away from for 10 minutes and make a sandwich before getting placed in a game. If Sony would have added party/community features into PSN (beyond Home) KZ2's clan system would have been heavily adopted and used. I think the recent examples of MAG and KZ2 where I believe they are wonderful games that online experience could have been drastically improved with some increased standards from PSN/Sony. When you have a Company (Sony) that is so divorced from its 3rd party developers or even its own division (PSN) that updates regularly break online play for games it clearly signals that change is needed. I believe this is because PSN originally was unfortunately an afterthought, a presentation bullet, for Sony instead of a fully backed service that would be the backbone for its console. Or Sony console patches breaking online play for some games.
I think SC:C and Warhawk were prime examples of this in the beginning where the games were left unplayable for weeks because of server and patch issues.
I am lucky enough to have a 50mb/10mb connection at my home so I rarely experience lag, but what I do experience is PS3 games performing poorly over PSN. However PSN is inconsistent because there are seemingly no standards for online experience. Yea, I definitely don't think that PSN is in the stone age.