Is Whirlwind Lance working as intended?

Monsters seem to able to stand right inside of the whirlwind without taking any damage. Is it only the collapse that does any damage?

Throw a Spear with enough force to kick up a Whirlwind where it lands, Slowing enemies and Blinding them in its area of effect. Entering the Whirlwind collapses it, dealing damage and causing Knockback. Consumes a Frenzy Charge if possible to create the Whirlwind with one more than its normal maximum number of stages.

Beyond the basic description there were two attack damage values shown on PoE2db (https://poe2db.tw/us/Whirlwind_Lance)

In the meta info it shows: Attack Damage: (110–343)% of base

But then after the description it shows:
Whirlwind
Attack Damage: (50–181)%

I wasn’t sure how to interpret those two values.