The Biker Files...
In the Biker boss fight, you end up bashing his head in with a golf club. Obviously, this "kills" him. However, In the short Biker campaign, as Biker, you defeat Jacket, easily. Jacket's defeat is not as brutal as Biker's, because Jacket's head is only kicked. So here begins the confusion. Some theories say, Biker is the one who put Jacket in a coma, giving him brain damage. However, here is my counterclaim, when Jacket arrives in his apartment, Ritcher shoots him, putting him in a coma. We know this, because this is Jacket's last memory before waking up in the hospital. (All the missions before were his memories, leading up to his coma).
By the way, why did Ritcher shoot Jacket? Both recieved calls from the janitors. They should be on the same team with the same objective: To destroy the Russian Mafia.
Back to the topic:
Other theories say that neither Biker nor Jacket came to Phonehom. That they "lied' about going there. I have completely turned this theory down, because it defeats the purpose of the player actually going to Phonehom, much less the boss fight itself. So this theory is chidish.
So it all comes down to this; Is Biker dead? Or did he put Jacket in a coma? Then what about Ritcher? Did he only kill Jacket's girlfriend and leave? Did they even go to Phonehom?
Perplexing, I know.
Why don't you decide? Hey, mabye if I'm lucky enough, mabye a developer will comment, and he may shed some light.
All opinions are welcome, and thank you for your time.