Fourteen of Wales' starting line-up in the 30-3 demolition job in Cardiff 12 months ago were selected on the British & Irish Lions tour and it's feasible that had Priestland's Achilles injury not ensured he missed that match and entire 2013 RBS 6 Nations, it would have been a clean sweep.
As it was losing fly-half Farrell was selected as Jonathan Sexton's replacement and in Priestland's words, has since established himself as one of Europe's top two No.10s.
The two are set to face off against each other on Saturday but Priestland bears no grudge.
"He went on the Lions tour and is obviously one of the two best tens in Britain and Ireland. He's a quality player and he plays for a quality team at Saracens who have had a lot of success," said Priestland.
"Saracens are flying high in the Premiership and England have beaten the All Blacks (in 2012) and they're going well in this Championship so he's obviously a very, very good player, and I quite enjoy watching him.
"The impression I get of him is that he's got an old head on young shoulders. Having spoken to a few of the players who went on the Lions tour with him, they've been very complimentary of him. He's kept hold of the shirt and made it his own."
Sunday's winner is set to be in the shake-up for the RBS 6 Nations crown on the final weekend but Wales' task is made that much harder by their heavy away defeat to Ireland in round two.
Improvements were vast last time out at home to France but Priestland admits Wales' chastising in Dublin still lingers.
He added: "We'll have to be at our best to make sure there's not a repeat of what happened in Dublin because England are playing very well at the moment and Twickenham's a very tough place to go.
"They played well against Ireland, whereas we came up well short against them.
"There were a lot of lessons from that game against Ireland. As a squad we had a tough week after - the coaches pushed us hard and it was back to what we're used to as a Welsh squad."