I think that says more about the league than our defence to be honest. Meaning if we concede the same amount of opportunities in the Premier League we'd concede 3/4 times more.
I don't see dramatic improvements from last season once the pressure is put on, but the combination of heinous finishing in this league and teams being too timid to attack (because our attack is always better than theirs) makes our defence look, on paper, to be amongst the best in Europe.