Isn't the definition you provided that I just highlighted in red exactly what we're talking about here, or does that form of exclusivity not count?

Seems like it.  M$ published several games for both XBox/pc.  Gears, Halo 1/2, Fable, Fable 2(possibly) etc.

Well of course it counts but how significant is it ? if we're talking from a business perspective i'd say it was very significant however if we're talking from the consumer side of things i'd say it was very irrelevant.

The best thing about exclusivity is how limited it is a certain few e.g" I have this Nike Jumper and only 5 of them are in the world" this is what we care about not who has the publishing rights or exclusivity rights to a game e.g "Nike Have secured the rights to produce 5 jumpers".

So yeah PC/360 are exclusive in the sense that Microsoft has exclusive rights but who cares about that ?

If a game is on other platform, then it isn't an exclusive. Simple as that. I mean, one should call Gears of War a X360 exclusive but can say the same thing for PC.
"Gears 1 - PC exclusive" sounds akward to me. The same goes for Twilight Princess and most RE titles on the Gamecube.

It seems like a lot of people do. Some of them are in this thread. Many others you see asking whether they should get a PS3 or 360 with no consideration of the PC. Exclusive doesn't matter in a general sense. Does the guy that owns a 360 and PS3 care about exclusivity outside of his little world? No. If it appears on one and not the other, that is exclusive to that person, and no amount of general populace exclusive definitions will change it for that person.

Even if someone owns an HD console or two and a PC does it necessarily mean lost sales? Not always. I know people on here that would never buy a shooter on a console because of dual analog, so all shooters will never be lost sales, because they were never considered. If the person didn't own the PC, he just would have not bought the shooter.

There are a ton of different circumstances which change what exclusive means to any number of people, and that is why you have so many not agreeing. In the end, people only care in videogames what is and what is not available to them, which is more accurate than any definition could provide.

i consider a game that comes on both the pc and 360 to be exclusive , because u cant get them on the ps3 or the wii. if a game doesnt come out on the ps3 and wii, but comes out on the 360/pc. then as far as i am concerned its a 360 exclusive. for example the agency a mmo from sony is coming out on the ps3/pc, dc mmo is also coming out on the ps3/pc, those 2 games for sony fans could say their exclusive to the ps3, why? simple because they arent going to appear on a competing platform ( 360 and wii ).

you are contradicting yourself. By it being exclusive to one platform it would not appear on the other. Microsoft does not have exclusive publishing rights to pcs either. Pc software sales has a negative effect on xbox 360 software sales. Alas they are in direct competition.

I just answered correctly. You may all proceed to thank me now.

M$ has published several first party XBox brand/PC games.  That is what exclusive publishing rights means.  Meaning that if Fable 2 comes out on PC, M$ will have to have published it.  Meaning M$ thinks that Fable 2 on PC/360 will generate more money than having it only on the 360.

That's a spin-off with it's own story and characters.... And heck, it's in 3rd person, not first like the console games.

Yes they have published several titles. Just because they publish several titles does not earn them the right to all titles that they do not publish. Infact, the titles they publish for both the xbox and the pc ARE MULTIPLATFORM Yes ! it's true ! They are Multiplatform titles ! Why do you think they are delayed ? It was even said by someone else, They don't want too many conflicting sales which might hurt their console brand. I mean comon. It's fairly obvious.