Simply because the PS was out first.
The Sega Saturn beat the PS1 to market and the Sega Dreamcast beat the PS2 to market. Notably, the Dreamcast had the excellent 2K games as well.
The PS1, I believe, is what established itself as the "Sporting" console due to software. Notably, the PS1 had Gameday which was not only a good game, but polygon based whereas the SS version of Madden was sprites and the first PS1 version was even canceled due to the impact. Sony also had Gamebreakers and a good NBA game for the time. And as the PS1 marketshare grew (dwarfing the SS and fending off the fast rising... and then sputtering... N64) it began to collect an impressive library of sports games.
And with the PS2, the hype around how great the PS2 version of Madden was (which wasn't on the Dreamcast) was significant. I had a lot of friends who didn't even really like football who bought Madden because of how great it looked. While within 12 months the PS2 had a lot of great software, at launch Madden was a major force.
Which, of course, with Madden squarely in your corner as a system seller it draws in all the other sports.
In the US, American football rules supreme. This goes for mindshare of the sport -- the NFL, let alone American football in general, dominates the commercial sporting scene -- as well as sporting game sales in NA.
The fact Sony had 2 commercially well received launch football titles in Gameday and Madden 2000 I think, more than anything, set the tone.
The 360 launched first and the Madden tie in this year was huge in establishing it as the platform to play Madden.
This year, yes. 2005 and 2006? Not so much. While Madden sales were good on the 360 in 2006 and 2005, they were also relatively strong on the Xbox1. And there is a gap between "Good Xbox Madden sales" and "insane PS2 Madden sales".
I frequent a couple Madden forums
oops
and the tone in 2005 was definately, "I am waiting to see the PS3 version" due to the stripped out features and some performance issues. In 2006 some people migrated, but in general the game was still inferior to the PS2 version, as well give the PS3 a year to settle in and drop in price. But now? The 360 had a price drop right before the Madden release, is cheaper, and the 360 version runs better.
So it isn't as much a matter of MS being out first, but the quality of the product and pricing considerations winning over fans.
As for learning the controls... my take is that Madden is pretty familiar on all platforms. Even more, the PS2/Xbox versions until this year owned the 360 and PS3 versions.
And because the 360 version in 2005 and 2006 was substandard I don't believe, based on the sales evidence, there was a mass exodus of PS2 Madden gamers to the 360. So in general I don't see a lot of PS2 gamers getting 360's because their friend got a 360.
I still think this entire concept of console fanboy doesn't greatly extend beyond the internet.
I dunno, I know a couple at work
But beyond that, when you see people like Bill Simmons (ESPN writer who covers the NFL extensively from a "fan" perspective and is very, very popular) suggesting to million of readers to get the PS3 version when asked what version to get...
You're already familiar with the 360 controls now because you've been using them to play at your buddy's house.
And
everyone is familiar with the PS3 controls because they have been almost the same for 10 years for Madden on the Playstation.
Its one of the benefits of launching a year early, it was huge for MS, and I think it will prove to be well worth it as trends like the one Acert is discussing emerge. This is in spite of the hardware difficulties. Launching earlier was huge.
Of course releasing early has some impact. But there were a lot of factors, and continue to be so. Who would have expected Sony to come to market with a $600 console?
If they had gone a route with a $300 or $350 console I think MS's many misteps would have been more exposed for the huge bluppers they are. So you are right, the early release has been essential to MS's early success and as time progresses we will see more trends like this due partially to the early release... but also price disparity and development complexity and... a lot of other stuff!
If it did nothing else but establish the 360 as the sports gaming console this generation, it was worth it.
And I would add MS has done a job to make themselves the "broadest and deepest" platform for a lot of genres this gen to this point in time. Racing games is only slightly surprising, but right now if you are an RPG fan the 360 has had the best offering to date by a mile. Now THAT is shocking.
Now that you could partially, probably largely, attribute to the early launch. And that will likely play as a factor over the next year as prices settle. I know it is a huge factor in my all-so-close console purchase.