aircraft stress levels, for ai aswell?

[Coen020]

Hi, in the new 4.10 update planes have stresslevels right? they'll break apart if used too rough. However i wondered; does this also counts for the ai planes?

I was playing the Biggin Hill/611 Squadron campaign, on CanonUK's english channel map (which is AWESOME btw ).

I was chasing a FW-109 over the channel, he suddenly took a steep dive, i followed untill we both were roughly going 750 km/h (i cant tell for sure it was going so fast).

He leveled his plane with ease in a very fast manoever, me however had to really slowly level my plane to not break my plane up (i really felt it cracking and moaning). However it was no use my left wing just broke off like a twig, which left me taking a dip in the Channel.

I was wondering, do the ai planes have stress levels aswell or is the FW-109 just a much tougher plane then the Spitfire?