Let's look at the individual stats for those two players, Marleau and Ward:
Marleau's +/- is -17 which is the worst on the team
Marleau's CF% is 48.6 which is ranked at 18 out of 23 on the team
Marleau's FF% is 50.2 which is ranked at 17 out of 23 on the team
Ward's +/- is -11 which is ranked 4th worst on the team
Ward's CF% is 50.4 which is ranked 12th out of 23 on the team
Ward's FF% is 52.0 which is also ranked 12th out of 23 on the team
So, the stats back up what DystopianTierney stated about Marleau and Ward not being shutdown players. None of those stats are respectable for shutdown player in the league, and only Ward's CF% and FF% stats are decent.
I post player stats in the GDT so we all can look at them and use them for the player evaluations we post here.
The problem with your stats is that they are the wrong sample size.
Ward-Marleau-Nieto have only been the "shutdown" line since Hertl was put on the top line, and cooch came back. Looking at their stats for the whole year is faulty logic.
Over the last 15 games since they were put together:
Marleau cf% 50.70 (10) ff% 51.15(10) zs% 37.50(13) SATF 180(6) SATA 175(4) SATF/60 50.42 SATA/60 49.02
Ward. Cf% 50.97(9) ff% 50.97(11) zs% 38.33(12) SATF 183(5) SATA 176(3) SATF/60 53.51 SATA/60 51.46
Nieto. Cf% 54.52(4) ff% 55.08(6) zs% 41.35(11) SATF 187(4) SATA 156(7) SATF/60 56.83 SATA/60 47.42
When you average out their numbers, and compare them to the same set of data, for our third line averaged, it looks like this:
Line 2- Cf% 52.06 ff% 52.40 zs% 39.06 SATF 183.33 SATA 169.00 SATF/60 53.59 SATA/60 49.30
Line 3- Cf% 50.91 ff% 52.02 zs% 49.00 SATF 151.00 SATA 145.67 SATF/60 50.68 SATA/60 48.84
So based on all these stats, I see no objective reason to say our 2nd line isn't playing perfectly fine as a shutdown line. Each player is above even in corsi and fenwick, while getting horrific zone starts, they are creating a ton of shots, and not allowing any noticeably large amount of shots against.
The only place our second line is having trouble right now, is scoring. The question though is why. Is it maybe because they are playing tough comp, and starting almost two thirds of the time in their D zone? Maybe it's because nieto, or ward, or Marleau suck at scoring ES? Or maybe it's a little bit of both, plus some bad luck?
Who knows, but what I do know, is that as a whole, that line is doing just fine in a shutdown role, and don't see any reason to mess with it, or any line really, except bringing Brown back for Zubrus, no joke.