At least WRT White Gas, my MSR bottles weigh the same order of magnitude as an isopro canister, yes, they give me more boil time, but the stoves and pump are quite a bit heavier.
at least, particularly when you're comparing stoves like a svea or whisperloud which I am.
an 11 oz msr fuel bottle weighs 3 oz and the 22 weighs 5,

now, while the fuels aren't exactly equivalent in the energy they get out of them, assume it's
close enough for a minute, and assume weather isn't a factor, and do the math.

Comparing one canister:
8 + 5 = 13 (canister)
11 + 3 = 14 (small) 2 oz more fuel

or two, or three:
22 + 5 = 27 6 oz more fuel than 2 canisters, 2 less than three
13 + 13 =26
13 + 13 + 13 = 39

Trouble is you're talking about, in the best case, 6 oz more fuel for the weight carried here, or being able to carry 12 oz less weight for slightly less fuel.

the problem is then the weight of the stove and pump.
My snow peak gigapower stove weighs 3 oz.
My whisperloud weighs about 16 oz or so, and the pump a couple ounces.
my svea weighs 19 oz... A new MSR simmerlight I think weighs about 8, but even then with a
couple ounces for the pump, you're still only about breaking even on up to three canisters.

Now if weather is a factor, (i.e. snow and cold) forget it, I take white gas.