Yeah, that was a rather important detail.
For the console makers Nintendo clearly has the best portfolio for marketing on the mobile devices. It is narrow, but deep. The entire Mario franchise with all the characters are extremely popular and would sell no matter what the platform. That single franchise ranges from Donkey Kong and Mario through characters in the current games. They also have the Zelda franchise. They have deep connections with Pokemon and that could also sell extremely well on phones and tablets. Apart from those, they don't have much that is easily marketed. Deep, but narrow.
Microsoft's got Halo which is moderately popular, but still nothing compared to the depth of Nintendo's cornerstone. Besides Halo they really don't have anything that is active and buzzworthy. They could try to resurrect Age of Assorted Governments, or B&W, or some of the older franchises, but none would carry much weight. The games themselves were fairly popular at the time, but probably not enough to justify the cost of a series reboot.
I think all three of the console makers have missed the boat on this one as far as software goes. The hardware will sell, Nintendo will drive Nintendo hardware sales, third parties will drive Microsoft and Sony hardware sales, but I don't see any of them succeeding at software on Android/iOS mobile. Maybe in four or five years they will be able to catch up, but I don't see any of them taking a leadership role in the near term.
Of all the major players out there, I think EA is in the best position in mobile. They had the steady stream of apps back on the J2ME-era phones, and they must have been profitable or they would have stopped. They made the transition to today's mobile environment relatively smoothly by pumping out classics (both modern and old) such as Tetris and Bejeweled variations, plus the usual annual sports titles on every platform in the universe. Their Hasbro license is still making gobs of money with variations of Monopoly, Life, Scrabble, and assorted other popular titles. They had a few missteps in mobile but overall seem to have trended pretty well, far better on average then the competitors. Some of their purchases have paid off, such as Popcap that was felt as overpriced at the time, but with games like PvZ2 with Apple giving 'truckloads of money' to delay the release, it seems the investments worked out. They also have a very broad portfolio of IP and are airing out classics with Mortal Kombat and Ultima reboots.
Zynga's a distant second, but they seem to be in a death spiral for general games. They have two product families that are good but seem in decline, the Something-Ville family and the "With Friends" franchises. Everything else they release feels like one-off titles rather than long-living franchises. They lack both the breadth and depth of EA's massive portfolio, and it feels like they are still too much of a hit-and-miss with products requiring SaaS connections and vanishing quickly and noisily. It seems last year they made more negative news with all the games they closed rather than news with new products. All we hear is "OMGPOP is closing!", "CityVille2 is closing!", "Mafia Wars is Closing!", "PetVille is Closing!", "YoVille is closing!", and so on. Nothing about new amazing products. They dropped from $1B down to $400M for a while. They only new thing is their real-money gambling. Sure the gambling has potential to make a lot of money, but certainly limits their growth geographically and in the mobile market generally.
I think EA's already figured out a collection of sweet-spots in the mobile market that reliably balance cost, profit, and entertainment. Sure there are the companies that put out a lottery-winning blockbuster, but nobody has yet figured out how to reliably make hits; EA seems how to at least reliably mix profit and fun. By volume of released mobile games they seem to be the clear winner so far of the established game industry players.
Also they've started with Ultima Forever a few months back, now they just need to bring back the Wing Commander universe.