To answer several questions...

First, I really don't see how anyone can say that a pull pull system is easier.

Lighter? Maybe, but by how much? I think the difference is negligible.

More flutter resistant? Possibly.

Failsafe on throttle? Yes, but with considerable more trouble than a pushrod (Finding the right spring - using a much more expensive throttle servo - needing to find an anchor point for the spring, etc.)

The biggest advantage I see is that a pushrod (When it's pushing) can bend. A pull pull system completely eliminates that.

So while each of these items has some merit, I think it is up to the individual to determine how much time and money he wants to spend tinkering.

Personally, I'd rather fly - But that's just me.