I would not put to much emphasise on the idea that SS-units had better equipment than regular army units. It is a notion repeated very much post war, so much that it has become a truth. Still I haven't seen anything supporting this. I have been to BAMA in Freiburg and checked the distribution of armour (Feldherrenhalle papers e.g. "RH10") and there is no special SS distribution.
I would still say that you can keep the stats for the SS units (due to dedication of the men), but skip out on the increase in fuel. This is also a balance issue, there is so much tech tied into these special units that it gamebalance wise can't afford any additional drawbacks.
And please take a look at my post above about Lt. Inf. I really do think that Jäger divisions is a far better example for this kind of units than the Green devils.
the Waffen-SS units had better equipment and especially more equipment. they always received the best first. the equipment was sometimes specially build by the SS. SS Panzerdivisions were (nearly) the only units equipped with Tiger and Tiger II. From the Wehrmacht only the elite divisions "Großdeutschland" and "Brandenburg" had similar strength and equipment.
my grandfather was private in the GD division and he always said that they had up to the end always the best men and equipment available similar to the SS-units.