Now which planes are hard to fly than in AH?
AFAIK there are no planes in AH that are hard to fly but there are planes that are hard to FIGHT in (E-fight, low-speed dogfight, stall fight, you name it...) based on their specific ACM capabilities.
All planes have their advantages and disadvanteges. I know one thing for sure (having flown the various 190's long enough) it is not easy to slow speed dogfight or stall fight in them. Main advantage of the 190's is roll rate , a5 to some extent turn rate, dora high speed maneuverability. 190's tend to snap roll on low speed (dora too) which requires allot of control to prevent it.
I switched from 109 flying (all of em) to 190's. 109's are much more suitable for stall fights and have much better low speed handling, but a poorer roll rate.
I try pushing the 190's to its low speed limits many times (and i died allot in the progress, but I also learned allot and surprised a couple in the MA), but there are many planes in AH that have much better low speed handling than 190's (like P51, P38, P47, Spit's, niki's, la7, KI61, yak, la5, f6f, zero, 109), especially the planes that can deploy flaps above 200mph (which the 190's can't)
Stating that the Dora is easy to fly, yes I agree, but that goes for 99% of the planes in AH, it doesn't say anything on whether it is easy to fight in it and in what sort of fight.
I do agree with the fact that the survivability in the Dora is high, if flown high speed, or if in a 1v1 break off in time. But that goes also for many other fast planes (like the P51, P47, P38, la7, yak, tempest, tiffy). It all depends on how people fly their plane with the limits of that plane. You can B&Z forever without taking any risc in many planes.