I would not say GFuel is adequetly dosed at all. Judging from their energy prop blend which has 1750mg and includes (in order of appearance),, Cit Mal, Caffiene (150mg), ALCAR, , L-dopa and ATP.
That means that Alcar (best used at 500mg-2000mg) has a MAX of 200mg in this blend. But because it sits below caffeine at 150mg, that means it has less than (or equal to) 150mg of Alcar.
on the other hand has a massive 9800mg prop blend with a maximum of ALCAR amount of ~1600mg (could be lower, but this is the maximum that it could be) with Choline constituting the majority of that prop blend in FXT. In GFuel, that maximum choline amount is a small 108mg whereas in FXT it is a minimum of 1600mg. FXT vastly blows this out of the water.
Their is no comparison here at all.