Messiah wireless NES controllers are incompatible w/ Oz NES?

[Jagasian]

I've heard rumors at NES Dev that the Messiah wireless NES controllers are incompatible with the Australian NES. Are there any Aussies here that can confirm or deny this? Are there any other official NES systems that the controllers are incompatible with? Possibly the Canadian NES or one of the European NES systems?

[Kroogah]

Add this to one of the many other threads wherein you are crusading against Messiah Games.