Why is it said that PS4 is primarily concerned with indies?

[naruball]

Zappykins said:
What would you market as their flagship? Anything they do with the Move or the Eye will be compared to Microsoft and Nintendo. Their big shooter is already being compared to Halo. Drive Club vs Forza. Blu-ray isn't there exclusive.

They don't have a TitanFall. The most buzzed about game in years. Many other games are multi plat. And we are not going to see the differences in how they run for a while yet. (Not that I think that will be good news for them.) Knack, which might be fun, people dismiss as a kids game.

They could show why the touchpad on the PS4 controller is essential.

Back to my first question, what would you run as the lead 'Only on the PS4' game if you were in charge of advertising?

@bolded. Just no. Last of Us has had much more buzz. Also, according to whom? I could make a similar claim about Infamous: SS. If you're talking about new ips, still Watch Dogs has had insane buzz so far (easily more than TitanFall). Not an exclusive, but you didn't refer to exclusives there either. 

@Italics. Isn't it available on pc and 360? How is it a system seller? It's as if Sony made GT6 a ps3/4 game. It wouldn't help hardware much at all.