I'd buy one if there's a promise of half a dozen or so strong games around release. To me PS4 and Xbone are identical consoles with virtually identical games, a slew of drearily hyper-serious titles that bore me to death.
Buy a PS4 over this for a small saving? I'm sure there's plenty of people like me that can't even see a reason why they'd buy a PS4 over a PS3, who aren't massively impressed by graphics updates every half decade at this stage. Nintendo are surely onto something with believing that's a bubble, but it could be the last prescient thing they do though if they don't get the product, marketing and games right this time.