Broad asserted that England, conversely, is the "best" English team since 2010, suggesting a "brilliant" Ashes series is anticipated.
Warner's "moral Ashes" jibe referenced Harry Brook's comments from the 2023 series, where England sought a "moral victory" after a controversial run-out.
Broad, who famously dismissed Warner 17 times in Test cricket, argued that Australia is under more pressure due to perceived weaknesses in their team and captaincy.
The upcoming Ashes series is scheduled to commence on 21 November with the first Test match taking place in Perth.