I am quite puzzled there - since the FW190 were in different types.
I may assume the FW190 - without the letter - bundles the whole of A, G and F types (forfeitting numbers atm, since an A2 is quite different from an A8)
I also understand that in a full ETO game things may look different, and that as the war move on and on, the Luftwaffe was more worried to protect the skies of Germany than to have large presence upfront. (I shall briefly mention that ontop of that I am quite a sucker for 'possibilities', like if Germany had the production points / resources, they may have churned out earlier Fw190D or produced more quality planes, etc - but that's for another topic).
So I can see that the 'red bolt' is probably a mixing up of the FW190 G and F (suited for ground attack as fighter-bomber proper) with the bulk of FW190A - I am still puzzled at the vulnerability - and I'd have split the FW190 in more units (the FW190A could have got the white bolt at best or simply limited to strafing) and have only 1 red bolt type.
But why the vulnerability? It was quite a sturdy plane.