on the turrets the use of to aim give me a different idea of your phrase, the turret in '41 however were manually aimed, you can had a power for move the turret but is ever the gunner that aim.
Yer-2 is in the top 3 in its category: medium, there are 6 bomber in the category, one is a not starter, the B-18.
compare the Yer-2 with the other 2 US bombers
internal bomb load all thre are similar difference under 10%
external bomb load afaik the US bombers had not this capability
guns: Yer-2 had 7.62 guns in nose and hatch e a 12.7 in the dorsal turret, the B-23 had a 7.62 weapon in nose, dorsal and hatch and a 12.7 in the tail, the B-26 had 7.62 guns in the nose and in the hatch, a 12.7 in the tail and a 2-12,7 turret dorsal
speed B-26 is the fastest, they had different rated altiude so the advantage is on 10-20% range, the advantage of B-23 on the Yer-2 is low under 5%. this are on the max speed but probably the order is the same also in cruise speeds
range Yer-2 4100 km with 1000 kg, B-23 2253 with 1814 kg, 4426 ferry, B-26 1609 with 1361 kg, 3541 max (fuel in bomb bay)
this were main performance i see for my choice i'm aware there are many others, i knewn the need of lung runs for take off of Yer, the trouble for the high wing load of B-26, i don't remember nothing on B-23 (but were 38 so in not easy read some on they).