Australia's Got Talent (AGT) has withstood a ratings ambush by Dancing With The Stars to win the battle of the reality shows.

AGT had been struggling to make a significant impact in the ratings after going head-to-head with Seven network's singing series The X Factor for weeks.

It seemed AGT would get the breathing space it was so desperate for when The X Factor finished last week.

But Seven then announced it would air its Tuesday night reality show Dancing With The Stars on Sunday nights, for two weeks only, which happened to be the final two weeks of AGT.

However, the Nine Network had the last laugh on Sunday when the penultimate AGT episode was the second most watched show with 1.074 million viewers.

Dancing With The Stars had to settle for third place with 1.042 million viewers on OzTAM's overnight ratings.

Seven News won the ratings with 1.103 million while Nine News (1.015 million) was fourth.

The ABC1 had a hit with a different kind of reality show after The Search For The Ocean's Super Predator pushed its way into eighth spot with 878,000 viewers.

And the assassination of US president John F Kennedy, 50 years ago, still fascinates the public.

The SBS One documentary JFK: The Smoking Gun, which is based on research by former Victorian detective Colin McLaren, was 11th with 559,000 viewers.