Similar in that they were the low-profile remote controlled turrets, but it only had a dorsal and ventral turret. (2 .50's each)
It was very fast, however, and if the external racks were allowed would carry more ords than a B-17... 4k internal, 2k external.
Of course, another option - if the gun pods made it in - would be up to 16 .50s with 8 in the nose and 8 in underwing pods.
The B-26C model, which was called the A-26 "invader" series of aircraft was one of those aircraft which did not receive the praise that it should have during WW2. It just happened to have poor forward vis when in the ground attack mode. The B-26Z, which was never produced, was supposed to fix all the pilot complaints, i.e., a "Malcom" type canopy to improve the forward visibility, but as I said, was never produced. You are correct about the number of guns and bombs carried, but could, with out the wing pods mounted, could also carry 10, 4.5 inch "hummers" for ground attack as well. Great aircraft and very easy to fly!
1,091 A-26Cs were built and delivered, five at Long Beach, California (A-26C-1-DL and A-26C-2-DL) plus 1,086 at Tulsa, Oklahoma (A-26C-16-DT to A-26B-55-DT). About 53 more airframes were built at Tulsa but not delivered to USAAF, some of those later sold to other civil and military customers. A-26C was re designated B-26C with USAF in 1948. This tough old bird had a top speed around 350 IAS, before it started "groaning", and was still in service up until late 70's with some Air National guard units. Some were still flying as late as late 90's as fire bombers, based at Chino, Calf. There were some TB-26C's produced, but total is unknown, many of whom wound up in South Vietnam. One of the little know facts about the TB model in South Vietnam, nobody but a handfull of USAF pilots knew anything much about them, so the good ole CIA pilots of Air America was training the Nam pilots. Many of the Air America pilots who were flying C-123's had experience in the 26C, so I was told. Would certainly be a nice addition to the AH hangar of aircraft.