"Unions have no where near the % memberships they used to...

"Unions have no where near the % memberships they used to have..agree corporates over paid but politicians arent overpaid when when compared to corporates imo"
Unions, a few more than others have way too much power. Politicians are paid more than a large percentage of the people they are meant to represent, ( most of whom work harder). Some pollies earn their money, but more are not value for what they achieve for their constituents.

"For example just universities for instance the vice chancellor is on average paid twice the amount of the PM...whos job do you think should be higher paid?"
In the instance of the present PM...the Vice Chancellors. Only some though. A couple at the moment in Sydney and Melbourne should be docked for what they have allowed to happen on campus.

"As to public sector wages that all depends, many public sector jobs have large vacancies ie police forces, if they were paid more and had better conditions they would have more staff...depends on how important you think things like policing, nurses and teachers are i guess"
Of course the real people who you mentioned who do serve the public are excused. The "public servants sitting in their overpaid, top tier positions are in the same boat as corporate fat cats IMO.