In such a fight, 190A8 vs Typhoon there are a number of different items you'd want to consider, roll rate is certainly a prominant one as the differential in ability in this area heavily favors the 190.
One concept to consider is "lift vectors". Consider this, when you are trying to follow someone you typically try and keep your wings "in plane" with his aircraft, correct? That's because you're best turning potential is when you pull back on the stick (the whole aircraft is designed to generate maximum lift that way). If you could therefore get your lift vectors out of synch (ie, the wings are not in plane) then your potential to generate lift in one direction is not matched to what his may be. As Acetnt pointed out, scissors is such a maneuver but even a simple break turn can use this concept (when the differences in roll rate are so glaring as in this example).
The issue is, most people don't take advantage of this, they do simple "Spit"-ish breaks, rolling 90 degree left and then pulling back. A 90 degree roll isn't that tough to match as the amount of differential doesn't have much time to build (ie, the Typhoon completes the 90 degree roll a little slower but not enough to make a dramatic impact on the fight). Something different, like a 270 degree roll can have a more immediate impact, the Typhoon maybe being 90 degrees or more "behind" the 190. The extra time the Typhoon uses to complete roll can be used by the 190 to do other things (like start turning, gaining a lead in turn-angle). Using multiple reversals of roll can be super effective, making the Typhoon continuously trying to compensate for changes in rolling direction and paying less attention to everything else. It's also typically more difficult to hit a rolling target because the correct lead angle for any shot is constantly changing and thus can cause people to "not shoot". This is a way to exploit a bad trait in the Typhoon performance.
Roll rate is also very useful in the vertical or in vertical type maneuvers (High/Low Yo-Yo's) or rolling scissors.
If you want a demo, send me a note and I'll meet you in the TA one evening and we can run through some demonstrations and get some tips. Learning roll-rate techniques really makes 190 drivers awesome vs dog-meat.
soda@hitechcreations.com