I'll give a breakdown as to why this won't happen.
Despite Bloodborn and Order, (which are no bigger, even less so than Infamous in the US) PS4 will not sell more than XB1, than it did in the first 6 months of 2014.
XB1 managed 1.1m, it'll do about that again, 6 months of a better baseline thanks to $349 vs $499 will offset Titanfall. PS4 will likely be around, the sales lost to XB1 will be partially offset by Bloodborn and Order.
You're expecting outside of the US XB1 0.9~ vs 6m PS4.
LTD has it at 4.8m XB1 vs 11.7m PS4.
You also expect the average baseline over the next 8 months to be
XB1: 55.8k
PS4: 217.6k