Lifetime Xbox One sales have reached 19 million units—at least if EA's CFO is to believed. During a financial call last night, Blake Jorgensen said the combined install base of the Xbox One and PlayStation 4 had hit an estimated 55 million units, a mere two years into the life of the current generation.

While Microsoft has long stopped reporting on the absolute number of Xboxes sold, Sony continues to push out its own figures. Most recently, Sony revealed it has sold an impressive 35.9 million PS4s, which—when deducted from EA's 55 million figure—leaves around 19 million units for the Xbox One.

"I think our business seems to be operating pretty consistent as it has been over the last couple of years," said Jorgensen. "The console purchases are up through the end of calendar year '15. Our estimate is 55 million units out there which has exceeded virtually everyone's forecast for the year and now almost 50 percent higher than previous console cycle so, all of that is very, very positive."

While Sony has a significant lead in terms of units sold, as Jorgensen pointed out, both consoles are doing better than their predecessors did at the same point in their lifecycle.

That's certainly helped Microsoft's bottom line, with the company reporting a five percent year-on-year increase in revenue from its Games business for the quarter ending December 31, 2015, as part of its latest financial statement. However, hardware revenue declined nine percent, largely as a result of decreased sales of the Xbox 360. Microsoft also took a hit on Xbox One revenue, despite higher sales, thanks to a a lower sales price overall over the holidays.

Meanwhile, Xbox Live continues to grow, with a 30 percent year-on-year increase in users. There are now 48 million monthly active users on Xbox One, Xbox 360, PC, and mobile. Nine million of those users were added in the three months ending December 31.