Kopitar isn't 30, he's turning 31 in a few weeks, Doughty , turning 29, is the youngest of the Kings 'core' Quick turning (33) and Carter turning (34)
Stamkos is turning 29 in Feb. He is the oldest of the Bolts core with a good range of contributing talent in the 22 -28 age range. The Kings have TT, TP as what I would call NHL top 9 players, given their time in. AK might be, Iafallo might be in time, but not yet.
There is a big difference.
Doughty and Stamkos the same age .
Doughty is the youngest of the Kings Core (ave age age 31.7)
Stamkos is the oldest (average age 26.25) (I used Stamkos, Hedman, Kucherov and Vasilevski)
Since the last time the Kings went deep, in 2014 in the playoffs
Kings are 1 - 8 (9 games)
Bolts are 36-24 (60 games)
That's a big difference