If you're an engineer, this will surprise you. but, the vast majority of people don't know how to normalize data or even why you'd do it in the first place. cost of a burger of 1/3 lbs vs cost of a burger over 1/4 lbs, ( i don't mean to sound insulting) but the fact is: that's waaayyyy to much thinking for most people (it just doesn't come naturally for people to think like that). Personally, I normalize nuritional data on a per 2000 calorie basis. I've even had a doctor question this, until I explained the concept of normalization. It's just not how non engineers/ non scientists are accustomed to thinking.
In many places nutritional data is required to be normalized to 100g. In the US it's "per-serving" which is super subjective and makes everything complicated to compare.
I will say though that I prefer the way you normalize fuel consumption, as distance per units of fuel (miles per gallon), compared to our way of fuel volume per 100 distance units (liters per 100km).
