They both play LD, about the same age, close offensive stats, both sit #4 on the depth chart in their respective teams.
Why wasn't he a good comparable to look at?
Jacob Trouba's 5.5mil is fine for Nurse over a much longer deal and probably would have been done if Chiarelli had the cap space. Trouba's previous contract would most likely have been closer to 3.5mil now and that would have been a overpay for the Oilers for Nurse at this time. But Trouba is also a RHD so garners a bit more of a premium. I prefer to try and compare LD to LD.
Those contact negotiations were very ugly from what I remember (talking heads on tv were speculating he wanted 7mil per) and Trouba wanted out of the Peg. And was asking the same 7mil this year with his arbitration deal.
Not the same circumstances at all with Darnell.