Personally, I prefer the older view of stormtroopers that seemed to hold sway in the SW "flavor" of the 90's. Stormtroopers are the elite Imperial shock troopers and are a force to be reckoned with.
I'd swear people were making jokes about 'only Imperial Stormtroopers are so precise' in the ninties. Like A lot of jokes.
The recent Ken and Robin Talk About Stuff podcast suggested that, since Lucas was a California Hippy, the rebels were the heroic rag tag Viet Cong and the Imperials were the squares with the crew cuts in the US Army.
And I think we should respect that. It is the Platoon and Apocalypse Now view of the US Army in Vietnam, not the We Were Soldiers version.
Body armour that can stop a rifle bullet has only been a thing for the last ten years or so, so in the ninties, I'd swear Stormtrooper Armour was seen more a liability than an advantage. Certainly in Star Wars D6 I percieved the 1D penalty to dexterity to not be outweighed by the 1D bonus to strength (I wonder if I was right). In D6, stormtroopers were operating with an effective 1D in Dex, which wasn't good at all.
There is a similar effect with Nazi, in that they are getting better soldiers all the time - I'd swear games in the ninties didn't value Nazi soldiers and equipment as highly as Flames of War does for instance. My local Hobbycraft used to stock five different SKUs of Tiger Tanks which I think gives an impression of what people think is cool these days.
In the end, Black Hawk Down was 2001, and I don't think the popular perception of the western military as bulletproof supermen really got going until then. And in Star Wars, the teenage farmboy with a dream IS going to win over the crew-cutted professional warrior. It is just that kind of place. Or at least it used to be.