Edited May 19, 2020 at 2:05 p.m.
Strome has 18 G (goals) this season and last season with NYR had 18 G (in 7 less games). Compared to 15 A (assists) last season with NYR and 41 A this season. Yes, Strome has been helped this season by playing with Panarin. Comparing this year and last year the difference is statistically minus a G or 2 and plus 26A.
Last season Strome played mostly 3rd line center behind Zibanejad and Hayes and some RW. What I believe and what I believe the Rangers believe is that Strome is a solid 2 way center that could consistently put up 20 plus goals and about 20 A as a 3rd line center and if put with top line talent could be almost a point per game player. I believe your charts are also in agreement with this line of thinking.
Another reason Gorton is in no rush to trade Strome (unless it's an offer he can't refuse) and why he'd much rather sign Strome for 3-4 more years, is lineup depth. If at some point another center is acquired or Chytil and for example Andersson or Hendriksson become the 2-3 centers, Strome can easily move to RW and always move back to center is theirs an injury or if the young center(s) play drops off.
The Rangers do not have to trade Strome, especially after trading Skjei and they are very happy with how he's played 2nd and 3rd line center, as well as RW. So regardless of what your charts say or what others on this site and some NYR fans say... If Gorton trades Strome, the return package will have the value of a middle tiered 2 line center or Gorton won't trade him. Regardless of charts or others opinions.