The B-26 Marauder was not intended to replace the A-20 Havoc, that was the A-26 which was intended to replace both the A-20 and B-26.
ack-ack
I've read it outright that the B26 was on the drawing board to replace the A20, I don't remember the source nor the exact timeline. I'm not going to get in to a purse fight over the issue.
As far as torps go, I guess I should have extended my sentence a bit further: the B26 in AH can't carry torps. Maybe the updated one will.
Again... I brought in the B25, He111, G4M, and Ki-67 for comparison on range. Anyone compare climb rates and speeds at 20k? It gets interesting as the altitudes get higher. Bomb load and defensive guns (offensive as well), all favor the B26 without question. I thought that was obvious.