Has to be Lana for me.
Listen, how many times have we've seen WWE bring in these unstoppable monsters (foreign or otherwise) only for them them to fail and become a joke? While Rusev is more talented than most of those guys, it's Lana who has truly gotten him over, who has truly gotten him the heat, who has carried the promos, etc.
It's because of Lana we're actually seeing fans care about a foreign character again. When was the last time that happened? The fact that she has pulled it off simply remarkable, especially since she's a fucking rookie. Heyman, Steph, etc. we all know how good they are, we've seen brilliance from them before, but who the fuck was Lana a year ago?
That's what makes it so impressive to me. Zero pro wrestling experience, yet she comes in and cuts a promo, gets heat, and controls an audience as good as ANYONE in the company. What a fucking woman, what a talent, what a NON-WRESTLER. She definitely deserves this.