Guess PS4 users will just have to settle with Uncharted.
Release dates as they are (before everything gets delayed) would likely see Tomb Raider coming out pretty close to Uncharted 4. Maybe it's a timed exclusive just to dodge that bus. Given what we know about game sales being front loaded near release dates, there probably wouldn't be much difference between not coming out on PS4 at all, and coming out on PS4 within sniping distance of Uncharted.
I like this theory.