After playing the new Luigi's Mansion, it occurred to me just how good Nintendo STILL is at designing games. I played just a snippet, but damn it was pretty fun.
People who are saying Nintendo isn't doing anything at the moment is looking only at the Wii U, and not the handheld scene, they're kicking ass. This E3 I expect some great software for both their current platforms. They still have the best first party.
One thing I gotta hand to Sony is that every gen they seem to bank on new IPs, something both MS and Nintendo can't seem to do. We can just look at all the franchises born on PS1 and PS2 up to this gen. No Kratos, Sly, Ratchet, Killzone, or Jak before PS2. No Uncharted, Infamous, Resistance, Littlebigplanet, Pixeljunk, Fat Princess, and whatever else you can name this gen. Of course some completely bombed (Folklore, Starhawk), and some clearly not as popular as others. But it's good to know you can buy each one of their consoles expecting new IP's based of their track record.
MS did a lot more for gaming when it comes to establishing a console eco system imo. After XBL, we got PSN, and whatever it is Nintendo does. Along with Achievements, and Cross Game chat and all. Although, those are things that Sony and Nintendo can plaster on. Outside of Halo, they don't really have any title under their belt that really "impacted" gaming. Not to say they have no 1st party, just the weakest of the punch. They lack the diversity at 1st party that both Nintendo and Sony have, and to me lack the impact that both Nintendo and Sony have made in the industry.
So I guess that's why I'd pick them, it's kind of unfair since they've had the least time in the industry. Thus less time to make as much as an impact. But it's been over a decade, and I cannot remember Xbox exclusives besides a few that have had some impact on me (that wasn't also available for PC).