If anything on the PS4 it struggles to maintain 60 fps at high settings and this has been proven with dozens of benchmarks.

Speaking of benchmarks FFXIV uses a benchmarking score system ranging from
[Under 1000]
Insufficient performance

[7000+]
Extremely High performance.

Using the collected benchmark info ONE 660 averaged a score of 7670.

Now don't get the wrong idea, I am not saying the PS4 is a weak system it's actually a pretty great performer and without cutting corners the best money has to offer in that price range but simply saying a i5-3570K & two 660s in SLI does worse than your PS4 is absolutely absurd, there's a reason why this equipment costs significantly more.

Continued yet again for low char limit>