Surprising fact: 8 skaters in our lineup today have a positive +/- stat.
Slightly less surprising: Foligno leads that group at +5.
Last year, the only 2 regular skaters (definition being 41 games or more) with a positive were Foligno and McCabe.
The current system and your edition both fail to value each game equally.
I'm in favor of 3 for a regulation win, 2 for an OT/SO win, 1 for OT/SO loss, 0 for regulation loss.
I also blame Kane. Nilsson had a better chance of stopping Greene's initial shot than the penalty shot, or probably even the ensuing 4-3 PP if the call went the other way.