Obviously Bestiary monsters are far too weak, mainly because their atrocious Weapon Skill scores. (In a game where heroes can achieve 60 or 70 in WS monsters need to do the same, and not because the GM decides to "tweak" the monster, but right out the gate)
But this is a starter adventure. Player tactics and GMing style matters.
What in one group very well can be a one-round easy kill can in another be a very harrowing hide and seek, where characters act like real scared humans out on a dark night with a scary river nearby.
Since at least half the pregens can easily lose to the troll as written (the female soldier type with WS 67? not so much) I can't really blame the devs.
I just wish the troll's WS 40(?) was intentional and lower than the default. Perhaps the troll was getting old or losing its eyesight.
But that a healthy strong troll, one worthy of a Trollslayer player character's attention had at least 80 in Weapon Skill, so that it likely would win in a 1:1 duel (the Trollslayer is one of the game's most weaponized careers, and crucially, Dwarves get huge starting bonuses)... so that the rest of the party
was actually needed - ttrpgs after all being a group activity. (You can easily get +40 for outnumbering a single foe 3:1, not to mention how a party archer can keep the Troll from amassing Advantage, while those the Troll does not attack will quickly build Advantage to astronomical levels)
It really is telling when you could - with a straight eye - claim every Weapon Skill score in the Bestiary could be
doubled. That really gives you a scope of how useless it is as written; all those Talents just listed as "optional" instead of actually worked in and precalculated into the stat blocks
