While they've racked up 16 wins out of 16 so for this season, a look under the Leinster bonnet reveals plenty of room for improvement.
To simply glance at the final score on Saturday, a six-try 36-10 win against a side like Racing 92 would appear to be as emphatic as it gets.
Four tries in the final 15 minutes of the game put an artificial shine on the performance though, where they encountered some familiar issues.
Their scrum continues to be inconsistent, giving away a couple of big penalties which fortunately Racing couldn't punish, following on from games against Glasgow, Ospreys and Gloucester where they've also encountered issues in the front row.
Likewise, conceding a maul try to Racing will sting, having given up two penalty tries last week at Kingsholm.
The penalty count is becoming a real issue. They gave up 10 penalties in the opening half alone against Racing on Saturday, and although their discipline improved after the break, you can add their total of 14 to the 30 they gave up in their previous two games. The 138 penalties they've conceded in 12 URC games ranks as the sixth most in the league.
"We play ourselves into trouble which probably leads to a lot of those penalties," Leo Cullen said of their poor first half discipline on Saturday.
On a whole, the positives heavily outweigh the negatives. Garry Ringrose seems to be playing the best rugby of his career, embracing his new role as a regular captain, while James Ryan is looking more and more like the player who burst onto the scene in 2017 with two huge defensive interventions in his own 22 on Saturday.
For all of their frustrations on Saturday, it was the pace of their play early in the game that ultimately left Racing jaded and chasing shadows in the final quarter.
The French side ran out of steam, and couldn't match the depth of talent Leinster could draw from on the bench. But Cullen (below) says the test handed to them by the visitors in the first hour will stand to them as we head into the final third of the season.
"You're looking to learn from the games all the time. To get that reminder, it's like 'Oof.' It's about making sure we're clear on things and we get ourselves into the game, and if we get ourselves in trouble, how do we get ourselves out of trouble? Not compounding errors, understanding the referee.
"We were probably at the wrong end of that penalty account in the first half in particular. It evened itself out probably a little bit in the second half.
"We gave away a lot of penalties, so we need to be better or have a better understanding of the interpretations on any given day.
"There are definitely some good reminders for us. The pool stages are about getting through and trying to get yourself into the best possible shape," he added.
Given the blows they've been dealt at the business end of the season in recent years, it's hard to see any complacency creeping in. With a trip to South Africa to come, they'll be doing well to keep up a 100% record between now and the end of the campaign, but the winning percentage will be irrelevant if they get their hands on a couple of trophies in May.
"You look at last year, everything seemed to be going great until the last two minutes of the [Champions Cup] competition," Josh van der Flier said.
"So yeah, it's nice to get pretty wins - I suppose you could call them - where it's kind of convincing from the start and we manage to hold on and get a win, but it's great to have those arm wrestles and come out on the right side of a game like that.
"It's incredibly rewarding, especially looking towards knockout rugby because that's what it's like, they're all tight games. We'll take a lot of confidence and positivity from that."
"The consensus was it didn't really feel like the score," he added, of the 36-10 win against Racing.
"We obviously managed to rack up a few points at the end but that was a very good Racing side, they made it really tough for us, very tight at half-time and they came at us in the second half as well. It was a much tighter game than that but we managed to pull away and I don't think the score does justice to Racing or how tight a game it was.
"I think the biggest feeling looking back over the results in Europe is it's what we wanted to do, four wins from four."
