Obviously you didn't see the same games I did. Last year was his best season. At the very least equal to 2 years ago(rookie season)..
Season Team GP G A P +/- PIM PP SH GW S S%
2010-2011 Canadiens 77 14 24 38 -8 124 9 0 3 197 7.1
2011-2012 Canadiens 81 7 29 36 9 119 5 0 0 205 3.4
Improved goal differential(+/-) by 17. Sure his stats were down 2 points, 7 goals, and in 4 more games last season, but he was relatively more effective(+/- stat doesn't lie). This is while getting 25+ minutes per game.
that was 2 years ago(his rookie season), he was like 20 years old. Last year there were no reports of any shit from Subban.
He's the best pure talent Montreal has drafted since Lafleur. You don't throw that away because he's flamboyant, just like good ol Guy.
He's going to get $4.5-$5.5M/year for 4-5 years.