I don't believe its going to happen. Sony has learned from there mistakes from PS3 and they are not going to drop everything they have in the same period.
That happened 2010 (God of War III, Gran Turismo 5, Heavy Rain) & 2011 (Infamous 2, Killzone 3, LBP2, MotorStorm: Apocalypse, Resistance 3, Socom 4, The Ico & Shadow of the Colossus Collection, Uncharted 3).
I believe they will be able to spread there games out better since they are not trying to change peoples mind share. Microsoft on the already showed there hand trying to boost sales ReCore, Scalebound & Phantom Dust were shown too early.
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XOXO