Microsoft's Xbox One has been the best-selling games console for four weeks in a row, MCV understands.
The machine has benefited from a 30 price cut, while the launch of Titanfall last week caused a surge in console sales of 96 per cent.
But retailers have told MCV that PS4 remains in control, and that Xbox's recent success has been aided by shortages of Sony's console.
In fact, a fresh supply of PS4s last weekend caused a 72 per cent rise in sales.
MCV understands that Sony is preparing to release extra stock into the trade for this Friday's launch of Infamous: Second Son, which is PlayStation's big hope for the quarter.