It’s literally because they don’t talk as much. Warne (like Dermott) is fine as long as he keeps his mouth shut most of the time and just commentates.It's like how Warne is better on the UK comms as their overall commentary is better/less matey.
The Aussie cricket commentary is done as if a bus will explode if there is ever more than 3 seconds of silence, which just brings out the worst in all of them




