I hope for more JU88 fighter variants so we can see threads about it.
Do the JU88, Mossie, B26, and TU2 outperform fighters? No
Can they perform in certain situations that allow them to get guns on, absolutely.
If the fighter matched up against them plays to the strengths of the bombers, he will lose.
This is why you check out every plane in the planeset. The training arena is great for this because you can quickly check how they perform at various altitudes.