also, there's a far greater deal of extraneous factors that go into a baseball game. no other sport, not even football, is so affected by the acutal building that it is played in. park factors have pretty much been proven to have a greater effect on baseball than chemistry. in hockey and basketball those kinds of factors are virtually nonexistant and players themselves have to be synchronized in just about every regard to be superior to another team. unless your franchize player/ballhog is like kareem or magic or mj, you're going to need at least one other superstar to win, or a good passing game.
in baseball, though, you can be like the 70's A's dynasty and hate each other and still win several world series.

I heard David Locke on the radio, and I think he made a bit more sense at times.  He read some emails basically saying everything that was said above, and agreed that chemistry isn't the most important factor, but however the Mariners chemistry is bad and that is contributing to the overall suckiness of the team.  He didn't seem to implicate that it was the only reason for it, which the title of his article would indicate.