We'll see. They lost one of their major selling points from the last generation (free online multiplayer), and they seem to think that a six-year-old game (Versus XIII) was going to be a system-seller. (Hint: they're wrong.)
I don't like their decision to charge for multiplayer, but it's still cheaper than XBL Gold and PS+ just appears to be a better service all around. Sony also aren't charging for the use of 3rd-party apps like MS do.
As fun as TitanFall looks, I don't think it will overcome all the positives the PS4 has going for it at this point, especially not considering will probably come to PS4 at some point. Unless MS can subsidise the console and sell it for $300 with a subscription, Sony has a clear advantage. The PS4 is cheaper, has fewer restrictions, and is a more powerful console by all accounts. Things can change in the coming months, but Sony have won a 360 owner like me over, and I'm not the only one.