Lose battle

How is this possible?
prntscr.com/elrkz1

What is here problem ? Why did not he kill all units ?
As a rule, I need to send on that camp 165 recruit , but I'm sent 1 recruit with Nusala and lost battle
I'm seen on combat simulator and there write tie battle.


Can it somebody to give answer on this question

Thanks

Nusala 1R is not powerful enough to kill the whole camp, as the sim results below show

prntscr.com/elrna0

to defeat the camp send wave 2 with 200 cav on any gen for 0 cav loss

Nusala can kill that camp with 1R but it's not a guaranteed hit. It's only if she deals maximum damage

Nus 1R [Nus 1R] >>> 100XBD 100CavD [100CavD 50XBD - 100CavD 95XBD - 100CavD 100XBD]

Cavalry have 5 hit points each and Crossbowmen have 10 hit points each.
That means 100 Cavalry & 100 Crossbowmen have a combined hit point total of 1500.

Nusala does 1000-1500 damage with a 90% accuracy.
That means she has a 90% chance of doing 1500 damage and a 10% chance of only 1000.

Therefore, on average, she will lose that fight 1 time out of every 10 attempts.