Shadowdancer too OP?

I managed to solo Drizzt at lvl 7 with a SD using the following equipment:

Shadow armor
Longsword +2
Dagger of venom
Gauntlets of weapon expertise
Boots of stealth
Healing potions
Potion of defence
Potion of speed

Difficulty: Easiest!!

Stats: (Elf SD)

Str: 18
Dex: 19
Con: 18 (tome)

Max HP for a lvl 7 thief

Spec:

I put everything in MS
Longsword +
Daggers +
One handed style +

Strategy:

Pop potions
Talk with drizzt
HiS
Backstab
Repeat until he dies

If HP gets low, run away and use healing potions

I tried using the dagger of venom, but he saved the poison every time.


I know this isn't very impressive since difficulty was set to easy, but still i raise the question:

Is the SD to OP?