If Kovalev had been healthy all year (he played with a knee injury for the first 18 games and was out for 13 games) as well as the slump the whole team had where we went 6-13 with him in the lineup and he only scored 3 goals and 11 points. Kovalev has basically had 3 stretches this year.
First 19 games he had 22 points
Next 19 games he had 11 points
Next 12 games he has 14 points.
So if the whole team hadn't gone into that awful slump that was pretty much caused by injuries and a horrendus goaltender, he would've kept his pace and would've had 11 more points by now raising his total to 58 points in 50 games. If you look at the point per game average and transfer it to 63 games he would have 73 points and be in the top 10 in scoring and this is on a defensive team like montreal.
If Montreal had adopted the forechecking style they now use earlier in the season instead of relying on the trap for so long, Kovalev could've had 80+ points had he not been injured/slumping for that one stretch.