Raccoon Jesus
We were right there
Henrik Sedin, Daniel Sedin, Pavel Datsyuk, and Henrik Zetterberg's best offensive years were all at the age of 30 and 31
Sedins were on a 5-year, 6.1 million deal at the time. I don't know where that stood in terms of overall league salary, %, or adjustment for inflation, but they signed 5-year deals that took them through their primes when there was an argument they were top-5 players in the game. They then signed 4 year, 7 million dollar extensions that will take them through '18 when they will be 36. I don't think many who will argue that their best years aren't behind them all-around.
Pavel Datsyuk was on a 7-year, 6.7 million deal at the time. From age 29-35. Maybe a good comparable for Kopitar (adjusted for inflation of course) but dude can't stay healthy. He's now on a 3 year 7.5 million deal that takes him to age 38 in 2017.
Zetterberg is on a previous-CBA cheater contract for 12 years and 6.083 million till he's 40 so that won't work for a contract comparable.
Do with all that info what you wish, but as has been detailed, very few of these guys mentioned in this thread were on long-term contracts that took them past their prime. Many took smaller deals to get there and through it. Different market, and different prices for sure so hard to connect the dots.