He doesn't have the same production though:
Tavares lifetime ppg .93
Seguin lifetime ppg .86
Tavares seasons over 80 points/ppg: 5 (or 3 if you want to nitpick over 1 point in 2 years)
Seguin seasons over 80 points/ppg: 3
8 first years in the league with over 80 points Seguin: 3/8
8 first years in the league with over 80 points Tavares: 3 or 4 if you count the one season he was one point away/8
Who had the better teammates and supporting cast: Seguin
The cash savings are irrelevant unless you are a basement team, we are talking about 1.33% difference in the cap.
I also dispute how much better looking Seguin is
John is far more rugged and likely the sort of guy you could survive on an island with, Seguin is the type of guy that would start whining on week 1 that his eyebrows are all "f*cked* and you should try and help him wax them, meanwhile John is building a house for you two to live in.