Fuel ... 75% I think on both, maybe only 50 on the Spit. Does fuel really matter? On the Spit 16 between 25% and 100% it's only 600 lbs. On the Jug it's 1,300lbs. Which is 10% of the total weight on the Jug, 6% on the Spit.
In the Pilatus I fly, full fuel or low fuel doen't affect 'how' the plane stalls, but more like 'when'. But all the fuel is in the wing. Since it's a debate on 'how', I don't think it's that relevant except maybe if the Spit has way backward fuselage tanks.