Oh man, fighting Sagat and a buffed Bison with one health bar... holy crap. That was awesome, and <b>tough</b>. Sagat's faster attacks are often easier to dodge than his slow attacks, 'cause just like the fighting games, the slow stuff always throws off your timing.
I ended up getting a Perfect against Sagat on my successful run. It was mostly luck though, he used a ton of Tiger Knee (which is always followed by a Tiger Uppercut... the only thing about his moves that has a pattern) and Ultras.
Buffed Bison kicked my ass. I beat him with like 3 HP left. Nothing deals enough damage to this guy. Best you can do is charge up a Hadoken for 2 damage, but that means dodging at least two attacks while it's charging.
So yeah. Bring those E-Tanks, 'cause you'll have to fight both guys in one go. I only had one E-Tank on me, and was saving that until I got a good run, but in the end killed both with one health bar. Maybe I shouldn't have used 5 on the refights (just to make sure I had the 4 Perfects necessary).
The boss fights in this game... fantastic.