Tab markets operate on about 118%, Austote operates on around 100.4% this means u get in most cases much better odds and therefore it is easier to win

It is unlikely that tab odds will better than austotes unless for some reason there is alot of money on one horse. for example if the pool is only 3000 and someone puts 100 bucks on a 100/1 chance then obviously the odds are gonna come in.

I forget why i wrote this now but anyways, it may help