Same wattage
But the motors are different, 30 and 60 as well as some Es use 2 ball bearings, F and G motors use a sleeve bearing at the commutator end, many other differences, as mentioned the fans are different, the tan G 1968- uses a much more powerful motor although the same wattage, it is identified by red brush holders, a 1205 is a 600 watt motor I think, Electrolux refined that 535 watt motor until it was perfect, I tried once putting a F motor in a G....guess what, it was too long and would not fit!