They already broke out.
Unless you expect Marner to turn into a 120 point player and Matthews scoring 60-70 goals.
There is no reason to think Matthews/Marner have hit their peaks, and yes, 120+ points/60+ goals is entirely possible, if not likely. Pre-prime, they've already hit ES and PP rates that would result in 60+ goals and 110+ points, if given proper TOI consistent with other superstars.
Matthews/Marner's pre-prime abilities/production are comparable to the prime/peak of many other superstars, so I understand the confusion, but like pretty much everybody else, they are not done growing at 22, and what we've seen in terms of raw production is not even not even a full reflection of their
current abilities.
These are not unachievable marks for these players, and it would be foolish to watch them do it on other teams.
Like Phil Kessel. What he was doing at 22/23 he wasn’t suddenly another 40 points better.
Kessel wasn't as good of a player as Matthews/Marner, but Kessel put up a 64 point pace in his age 22 and 23 seasons. He was PPG+ between 24-27, despite his PP TOI/GP going
down.
And if you don’t have a team how much does it matter.
We do have a team. A pretty good one. A better one than if we threw away our best players pre-prime.