Natural statrick line tool, 5v5, so that would exclude EN situations which I believe favour Stü with Giroux and Tkachuk, explaining the difference.
By including EN, you're introducing a lot of random variance, less than 10 mins of playing against an EN resulted in an extra 7 goals for the stü line, but you don't need to stick to the regular line for EN situations, you can use specialists for that situation.
Wrt the adv stats, it's tough to directly compare since we upgraded the D significantly with Sanderson and Hamonic all year (plus some games with Chychrun) instead of Zaitsev and Holden. I'd argue the third pair was also improved over Brown/Mete/MDZ with Brannstrom and Holden playing third pair most of the year