Microsoft already made their comeback, considering Xbox 360 was THE console to have last gen, it started out rough this gen for them. But now, they've made Xbox One was it should've been in the first place, had the strongest exclusive lineup, true backward compatibility, and are bringing many new IP's in 2016. Sales are nearing 20,000,000 in 2 years, Microsoft is just fine, and should continue doing what they are doing.
Nintendo just needs more third party support, and to give people more incentive to buy their console. Maybe a more robust online component, and less focus on Nintendo games if that makes sense.