I have no problem with Tiko in for Mashinter, its just not likely to provide any production. Don't compare him to Hossa, Hossa has history on his side. At some point Hossa, Toews, and the first line will produce.
I'm not comparing him to Hossa, I'm simply saying going on points and +/- is a flawed reason to sub in Mashinter for Tikhonov.
There's also the question of what you're expecting from a 3rd line player.
Frankly, the 3rd line has only been a legit 'scoring' line twice in the last 3 years. Once, in 2013, when Bickel Shaw and Stalberg were shooting way above their pay grade, and last year in the playoffs when we had two top 6 forwards and TT playing as a 3rd line.
One was arguably an anomaly, the other was a cap impossibility made possible by a well-timed injury.
In 2014, we traded for Kris ****ing Versteeg (a broken-down version at that) in hopes of kick-starting the 3rd line. It didn't happen, obviously.
What we actually need from the 3rd line is bum-slaying. A line that can match up against the 3rd or 4th lines of most other teams and come out even or better. Tikhonov can certainly handle that, and more over, he can do it playing more than 5 minutes a night.