I actually think this is a really good position to take. At this point, in this current generation, it is highly unlikely that Xbox One will ever overtake the PS4. Looking at it and setting goals from that angle is only going to lead to stupid decisions and failure.
Instead, they're focusing on showing that they realized they screwed up, and are working hard to correct that. While it won't close the gap much between the two, it will set them up in a better position for the next generation.
Also, while market share is important, like he said, Sony doing good doesn't translate directly to Microsoft doing bad. Many gamers have multiple platforms.
(All that said as someone who currently has a PS4 and Wii U... waiting for Xbox One to get some exclusives I care about =p)