I still can't get my EXO104 as dialed as my F103, I know the setup is there it's like you said the stiffer chassis responds to changes better so my lack of setup knowledge/experience makes setting up the EXO104 harder.
I'm convinced the setup to make the EXO104 drive as well is in there just it's on more of a fine 'point' than the F103.
Totally to do with chassis stiffness too.