Most of the stuff on the pattern page is relative to how much work the flier does in order to hold a line.
So the larger model - - -if flown slower - really becomes a handful as wind drift carries it and the apparant fuselage angle required is very visible.
been there - a million times
The optical illusion is that the big fuselage is being blown sideways
Flying little foamies ( those things again) cut into various relative sizes shows this easily.
The only fix is speed -speed and then speed.