Asked what he's learnt from his rivals, the Xbox executive said Sony has "done a nice job with PS4". While Xbox One's launch campaign was initially bungled, Spencer pointed to Sony's clear PS4 messaging from the console's reveal last February through to its launch in November.
"When I think about their announcement, their clear focus on a customer, leading with the value proposition of what they're trying to do, staying true to a vision, I think they've done a nice job in how they defined the PS4," he said.
Spencer also praised Sony's long-term commitment to new intellectual properties. "I really respect their focus on investing in new things and creative things, what they've done with David Cage and Quantic Dream around Beyond [Two Souls] and Heavy Rain; they stay committed to franchises even if they don't sell 10 million units, they'll stay committed to things.
"I think that long-term commitment to franchises is important, where it's easy to pull off the Band-Aid and move onto the next thing [if it doesn't sell]. I respect their 'stick-to-it-iveness'."
Spencer also had kind words for Nintendo, bigging up the company's catalogue of first party properties.
"Nintendo, I think - and there's some argument about this - that their first-party is such an amazing asset," he said. "Their first party studios and IP can lead what they do as a company and the platforms are almost in service to the IP - not in a bad way."