Tomb raider, because it has a bigger audience on PS, currently, which means it's more likely to pull potential PS4 buyers across to Xb one. Also RTR is ONLY releasing on Xbox in 2015. A PC release is unconfirmed and is only possible in 2016.
SFV OTOH is predominantly PS/PC, so there aren't all that many SF fans who lean Xbox but will now go PS4. And a lot of them will probably just go PC. Also co-launch on PC means less advantage to PS4. But it also means a smaller money hat.
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