This just sounds like the typical babyface performance to me, the good guy (or gal, in this case) taking a ton of punishment and offense from their opponent before managing to mount a comeback and pull out the victory at the end. People think (as Waco alluded to) that this type of thing somehow started with John Cena, but it's actually been happening pretty regularly since the earliest days of professional wrestling. Did people forget that a superhero like Hulk Hogan used to give this same type of performance? He would usually take the most punishment in his matches before "Hulking Up" (i.e. having a huge surge of superhuman-like adrenaline that wore off all the physical punishment he had just taken over a period of several minutes) and hitting the big boot and leg drop for the victory.
Also, the complaint with John Cena doing it is that he's been doing it for several years now. You know, "same old shit" and all that. A person can only prevail against all odds so many times on such a frequent basis before the underdog shit becomes tired and predictable. When you win enough big matches over a period of several years, you're not really the underdog anymore, no matter how big your next challenge may seem. With Paige, it's different because she hasn't even been on the main roster for a whole two months yet.