Actually, what he said is that it means that the native resolution is 900p and the frame rate is locked (which is actually just a euphemism for capped) at 30.
That does NOT mean everything else is the same between two versions.
The most cynical and literal takeaway of what he said is that everything else will be the same too. Perhaps that reading is perfectly justified due to the stupid way the producer worded it.
However, it is not the only possible outcome.
Here are some entirely plausible scenarios that would not contradict the guy's original words:
- PS4 version stays at 30fps more constantly than the Xbox One version.
- PS4 version features superior AA.
- PS4 version features better textures.
Don't get me wrong; what the producer said is almost PERFECTLY tailored to be interpreted as "we're just gonna force complete parity guyz." It's a PR blunder of absurd proportions. However, that doesn't mean the reality is as bad as you're expecting based on these words.
I suppose it could mean that. I will take the sentence literally though, until further clarification is given.