I'll start with the one that has bothered me the most: "Why did Bryan betray Yoshimitsu?"
Let's look back into the guy's history;
- A skilled detective with connections to the drug dealers. Killed in Hong Kong drug bust. Betrayed by the drug dealers, perhaps?
- Resurrected by dr. Abel to do his bidding. Betrayed by him shortly.
At least for two time in his life Bryan had been helped out, and both times he had been betrayed. What if he was so afraid of getting betrayed again that he couldn't stand the situation as it was, when he awoke a year afterwards. When Yoshimitsu saved him, it was a lose-lose situation to him, in a way; either he would die or he had to take the chance of getting betrayed. Upon waking and noting he was OK, the memories of betrayal filled his mind and he sort of panicked. He thought, "So far so good - and let's keep it that way, too!"
My theory is, that he was no longer able to trust those who want to help him. Also, I find this quite interesting:
Tekken 4 Storyline: Despite his impending death, Bryan's physical strength did not diminish. On the contrary, Bryan's muscles flowed with energy that made him more powerful than before. Along with this new strength, Bryan developed an almost uncontrollable rage that also manifested itself in his outward physical appearance."An almost uncontrollable rage" - from where did he summon the rage? The memories of the betrayals. I think the rage stayed within him the whole year he slept, and as he woke, so did the rage, and it helped in his decision to betray Yoshimitsu - "...before he betrays me!"
How does it sound?