Full disclosure: I have a Zymatic.
If comps are going to ban the Z, they should also ban any BCS-1000 setup, some PID controlled setups, probably the BrewEasy, and definitely any extract beers. /sarcasm... kinda
But seriously, when I see stuff like this it shows me how inexperienced these people are. Like Phil_M said, the precision of the mash is the least of anyone's worries when it comes to excellent beer. I have one because it's ridiculously easy to clean and all I have time for anymore. If people want to ban precision controlled mashes from comps, I'll keep the beer to myself.