I just realised something - what you're saying is that the stock Zen and rods are will probably fly better than your setup as long as one has less skill and doesn't try fly it your way.
So if I fly the 1.5 like you guys and the Zen like a statue I should be good to go .... LOL
The Zen rod is most definitely for the flat foot. It will allow you to get up in the vapors.
For the more active two wrap center and race is a lightweight option.
My current favorite combo is still a two wrap centre with 3 wrap leading edge and race rod verts.
Which is what the first prototypes were flown and tested with.
Then Ben made up the Zen rod which allows flat foots to fly in the low stuff.
Which lets face it is what we all wanted.
Personally I prefer a bit more weight in the leading edge with a softer flex than the race.
Makes for a more positive feel and weighty axles.
In the low wind fly what makes you feel good.
The Zen frame is an excellent starting point.
Over time you will find your magic combination.
Bazzer