Since I only fly the 19A8, I cannot speak about all 190's.
I find the A8 flys well, stable and predictable from about 110mph to 550mph.
It handles the deck as well at 20K. I try and stay above 350 mph in an engagement. (I have engagements not fights). I handles very well at speed. Certainly not as good as a Hog, Pony or Lavotchkin. But still very well.
It has a reasonable rate of climb, dives well, runs on the deck fast enough to get you into a friendly horde before the LA7 behind you can ping your tail off.
It rolls really really fast, which can be used to throw off a bogey on your 6's tracking shots, or to get him out of sync with you long enough for you to get him to overshoot, or for the cavalry to arrive. Usually if you can show the bogey that you are not an easy target, they will disengage, because they know that very soon the will be bounced by several of you team mates.
If you get into a slow turning fight with anything other than a late model 109 or 190, you will soon be walking home.
The 190 is a plane that is meant to be flown fast, and with no mercy shown to the enemy. Strictly hit and run. Stay hight, stay fast, attack, make your firing pass, and get out of dodge.