I don't think I agree with your numbers Chad. (SEE CHART BELOW)
With my weights, the Alcohol systems wins up to 17 pints boiled and much of the time over the Standard Canister (Snowpeak) for the rest of the curve. Both systems remain lighter than the Jetboil system all the way up to 50+ pints boiled.
It seems that you may have the JetBoil system weight too low (you have it around 520 g while I calculate around 630 g with a 3.5 oz fuel canister). It also seems that you may have the Alcohol and Standard Canister (Snowpeak) system weights too high. (I have included my weight calculations for the various systems below the chart.)

Note that the steps in the performance curves come from changing fuel storage as the pints boiled increase above the capacity of a container.
Alcohol (TD Caldera)
2.1 Caldera stove + cone BPL 1.1L Pot
3.1 BPL 1.1 L titanium pot w lid
178.6 1.1 Alcohol cont 8 fl oz + meas cup 12g/pt tot 15.5 pt boiled
6.3
15.2 Jetboil
7.0 Fuel canister 3.5 oz (boil 20 pts)
629 22.2 oz
15.2 Jetboil
8.0 Fuel canister 4oz (boil 24 pts)
658 23.2 oz
15.2 Jetboil
12.0 Fuel canister 8oz (boil 47 pts)
771 27.2 oz
Canister
3.0 Coleman F1 stove
3.1 1.1 L titanium pot w lid
0.6 Windscreen
388 7.0 Fuel Canister (3.5oz full) 16 pts boiled
13.7
Canister
3.0 Coleman F1 stove
3.1 1.1 L titanium pot w lid
0.6 Windscreen
403 7.5 Fuel Canister (4oz full) 18 pts boiled
14.2
Canister
3.0 Coleman F1 stove
3.1 1.1 L titanium pot w lid
0.6 Windscreen
530 12.0 Fuel Canister (8oz full) 36 pts boiled
18.7
Canister
3.0 Coleman F1 stove
3.1 1.1 L titanium pot w lid
0.6 Windscreen
7.0 Fuel Canister (3.5oz full)
729 12.0 Fuel Canister (8oz full) 52 pts boiled
25.7