Possibly late on this - for March so far the PS4 has sold more units via Amazon than the Titanfall Bone despite not having freely available stock and being back ordered for all of March (they had deliveries for the 11th, then they changed that to the 27th and now it is for April 3rd). The PS4 is ranked 15th for March and the Titanfall Bone is ranked 24th, the next hardware is all the way down in 38th which is the Infamous SS bundle that releases in a few days.
Titanfall itself has now fallen from 1st to 3rd behind Infamous and MGSGZ for PS4.
While I think that the Bone has had a recovery of sorts since the price cut and the strong pricing action by retailers, I do not believe it will be enough for MS to overhaul the large lead that PS4 has already built up. In fact I think after the end of March the ball swings further in Sony's favour as the stock issues will continue to ease and the promotional activity related to Titanfall dies down, that includes soft price cuts by retailers and the mega marketing spend by MS/EA.
I do not believe Titanfall will be a turning point for MS in the UK, and any recovery will be short lived. The PS4 hype is still very real, I think Sony have fucked up by trying to push two undesirable games in KZ and Knack via bundles though. They would have 100% sell-through in the UK if they did a DS4 bundle for the same price as the Knack/KZ bundles or just did solo units for the base price from now on. Sony need to stop shipping KZ and Knack bundles here. I know a couple of people looking for PS4 solo units to play GZ on and neither are interested in owning Knack or KZ, and neither game has any kind of trade in value. They would have bought solo PS4 units if they could get them but do not want to get KZ or Knack bundles, or the copious number of forced retailer bundles.