Balance issue: "Inline Reaction Wheels" vs. "Advanced SAS Module, Large"

[Crush]

Both parts provide a torque of 20 and also otherwise appear to be functionally identical (at least according to the description). But while the ASAS is larger, it only weights 0.2 tons while the smaller reaction wheels weight 0.3. Shouldn't it be the other way around?

[Pachi3080]

the larger one is hollow

[MR4Y]

the larger one is hollow

It might be larger, but it's structure is larger and weights more, since it has to support a larger weight. It makes no logical sense that a part that's bigger weights less.

[Supernovy]

It seems some of these are in need of balancing. I'm sure that will be included in a 0.21.2 patch if there is one.

Personally, I think that the reaction wheels should maintain a constant electric charge to torque ratio, but have differing mass to torque ratios.

[MR4Y]

It seems some of these are in need of balancing. I'm sure that will be included in a 0.21.2 patch if there is one.

Personally, I think that the reaction wheels should maintain a constant electric charge to torque ratio, but have differing mass to torque ratios.

Also, by logic, a bigger SAS has bigger reaction wheels as well, which also justifies it being heavier.