If you want a good late war Axis Bomber, you have two choices. Both Japanese.
Ki67 "Peggy" - Very fast for a bomber(somewhere between 40-60 mph faster than a B26), good guns (mostly 20mm cannons), decent bomb load, and torpedo capable.
P1Y1 "Frances" - Even faster than the Ki67, light defensive guns (nose and dorsal, both 20mm), smaller bomb load, but highly manueverable, and also torpedo capable.
All the German bombers from midwar on, were slow, undergunned, and big fat targets. Sorry but the Germans never really made a good medium or heavy bomber, beyond the early war years.
If you looking for something similar from the Allies, I would say a Tu-2 or a Mosquito.
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Vermillion
**MOL**, Men of Leisure