The US single engined planes in IL2 do feel slightly handicapped. Why...i've no idea!! But with a bit of luck the patch will address known issues and then everyone can start flying the P51 online....
Now
the Arado carries three 500lb bombs, does enough damage to a target and its fast, but its drawback is its speed!! its that fats that once you have dropped your bombs, you need about 25 miles to be able to turn back onto your target for another pass. The best tactic i could find was to line up a few different targets. Hit the first, then without having to make a huge turn, just go for the next which was lined up nicely for me.
Compared to the B17.... id take the B17 all day long!!!
the arado only carries the three 500lb bombs, but its fast.
the B17 carries eight bombs (diff weight classes can be unlocked) and does tremendous damage!! what it lacks in speed in makes up for with brute force.
when i play strike i play with a friend who also has the B17. between the two of us we can cause considerabel damage to enemy tickets.
Its all down to personnal choice in the end. Each to their own