It's not lazyness and it's not an anti-Sony conspiracy: it's basic economics and business sense.
Facts:
-EA may be huge but like any company it has limited resources.
-Most of these sports games sell mostly in the US.
-The 360 has a huge hardware lead over the PS3 in the US.
-360 owners buy more games per console than PS3 owners.
-These games all sell way better on the 360 than the PS3.
It would make no sense for EA to purposely make the PS3 versions bad, that would just hurt their profits. But it does make sense for them to prioritize the 360 version over the PS3 version based on the facts stated above.
EA prioritizing 360 over PS3
"A representative with the publisher told the writer that as a release date nears, the company sometimes readjusts the manpower on the projects to complete the Xbox 360 version first.
With a larger installed base for Microsoft's console, the rep said it makes financial sense to get that version of a game out first and maximize potential sales. The representative also noted that in the last generation, it made more sense for the publisher to focus on PlayStation 2 versions of games over those on the Xbox because of the platform's massive installed user base."
We don't provide the 'easy to program for' console that they [developers] want, because 'easy to program for' means that anybody will be able to take advantage of pretty much what the hardware can do, so the question is what do you do for the rest of the nine and half years? It's a learning process. - SCEI president Kaz Hirai
It's a virus where you buy it and you play it with your friends and they're like, "Oh my God that's so cool, I'm gonna go buy it." So you stop playing it after two months, but they buy it and they stop playing it after two months but they've showed it to someone else who then go out and buy it and so on. Everyone I know bought one and nobody turns it on. - Epic Games president Mike Capps
We have a real culture of thrift. The goal that I had in bringing a lot of the packaged goods folks into Activision about 10 years ago was to take all the fun out of making video games. - Activision CEO Bobby Kotick