Pell, 77, is appealing against a jury's decision to convict him of sexually abusing two choirboys in 1996, and abusing one of the boys again the following year.
He is currently serving a six-year jail sentence for the crimes, but his legal team has presented 13 reasons they say show the convictions should be overturned.
Pell's lawyer, Bret Walker SC, yesterday argued the jury could not have been satisfied of Pell's guilt beyond reasonable doubt.
He argued the offending was impossible because of the robes Pell wore and his location in the church, which was full of people.
Prosecutors Friday responded to those claims, arguing the guilty verdicts should be upheld.
In written submissions, they argued the jury was entitled to accept the complainant as a reliable and credible witness and that his allegations were not improbable when all the evidence was considered.
"When looking at the whole of the evidence, the integrity of the jury's verdicts is unimpeachable," according to their written submission.