Rudder and engines are different. Rudder kicks your tail around (not as much as single-tailed planes though), the engines will make your plane roll and pull nose to dead engine very slightly (as if you were giving it a liiiiiittle bit of rudder). But when the dead engine is combined WITH rudder to same side, you can do an amazing snap turn, but dont expect to sustain it 'cause the stall that will come will be very nasty.
About 38 toughness: The ONLY thing I agree is weird in the toughness now is the wing roots. They simply dont take damage, damage is x-fered to the engines.
Aside from that, you can ping a 38 anywhere else and you WILL tear pieces out of it. Wingtips are very vulnerable (and get snapped very often), engines get hit all the time (well, it is 70% engines), tails DO snap out if they are hit from above or below, the stabilizer does break off with a few cannon rounds.. you just have to HIT it.
It seems very durable because in comparison with other planes, it does not shed its wings with a burst on the wings. But let me tell you, give a 38 a burst, and you will knock the engine out or make it smoke (3-4 mins left of life on the engine), you will get an elevator (and 38 without 1 elevator is SCREWED. it can barely pull nose up), or a flap (no flaps=no turn=gotta run for it, and 38 can NOT run from anything BUT a spitv and zeke). What would usually be an instant-fatal blow to any other plane is a torturous death for a 38. When I shoot other 38's I bang them with 2 short bursts in 1 area, watch them smoke and some piece fly off, and I let them be. a few mins later I get kill (some cannon dweeb shoots him up below but since I pinged 38 more I get kill, or 38 crashes).