I'm pretty sure the one doing the heavy lifting in the slugfest was more Liljiana, who was keeping the entire camp occupied and distracted so Mathilde could backstab them efficiently. I'm very certain that Liljiana knows that Mathilde cannot replicate that feat in a straight fight. Not to dismiss or downplay Mathilde's feats, because they were appropriately fantastical, but I think it bears mentioning (hah. Bears) that Liljiana was a gigantic factor in there that was essential to Mathilde's success. She was the one fielding half a dozen bonuses from four gods backing her up after all.
There's no doubt that without Liljiana Mathilde couldn't have done what she did, but Mathilde still did a lot of killing in a very short amount of time. While the bearricane certainly helped distract them, the enemies she fought were those not the ones close to Liljiana, they were intercepted before they could join the dogpile. Besides the large number of mooks (some of them bearing enchanted weapons that we still need to research) Mathilde took down an Ulgu shaman, an Azyr shaman, a Chaos spawn and a Daemonette, and while Liljiana shares some of the credit for that those contributions really were mostly Mathilde.She didn't took half the camp by herself. Liliana took nearly all of it and Mathy went around stabbing the disorganised warriors. It was impressive, sure, but we didn't do the heavy lifting in the fight.