Lets make this thief vs soldier so we don't have to factor in the barb's uncanny dodge into the equation.Sutek said:Seeing now that I have been mistaken all along (all the crap I coulf have killed too...lol) I just think that multiple attacks plus sneak attack is excessive. I don't see really how a thief is "vulnerable" since if he's getting even 2 attacks base wielding a dagger he can deal up to 76 points of damge in a single round, and all he really needs to do is 20 to force a massive damage save. Even at equal level, an 18 CON Barbarian would have around 112 or so HP and that 72 points of damage is over 60% of those HP in one shot. To me, that's excessive, particularly when viewed against non-sneak attack damge potentials.
Now, lets take your thief and give him a shortsword instead of a dagger and call it his sneak attack style weapon, so on a sneak attack he does 5d8 damage (1d8 short sword + 4d8 sneak). Now that does indeed make for a max damage of 40 points per hit or 80 points per round .... but anybody who understands a bell curve knows that when you start rolling lots of dice it is the average damage that is more important and the average here is 20 points per hit or 40 per round.
Now, I know what your thinking, 20 points is massive damage! Well sure, when the thief is finessing his way past the flat-footed soldier's armor that is all well and good. But that will only happen once or twice a combat and we are talking about the threat of full-round sneak attacking which most likely means flanking a non-flat footed opponent. And since that soldier is wearing a mail haubrek his DR reduces the damage to only 14 points ... no massive damage. Now were looking at 28 points of damge for the entire round. Now, since I was doing averages lets recalcualte the soldier's HP for average results with a 16 Con, thats .... 69 HP so 28 points of damage is about 40% of his HP gone in a round.
But even if we were using your numbers, that is 60% of the Barb's HP in a round, we are still left with the thief's opponent standing at the end of the round. And that is exactly when the thief becomes "vulnerable". You see, now its the soldiers turn and he is going to take his 16 Str and his greatsword with Weapon Specalization and power attack for 2 points (which he can afford to do because the Theif's DV is not the best) and that is 2d10 + 10 or an average of 20 points of damage right there (plus note that unlike the thief he doesn't need a flanking buddy to pull this off). And unlike the soldier the thief is not wearing any armor and with his lousy Fort save he could be in some real trouble.
Oh, and lastly don't forget that the thief only has a 3/4 BAB. In regular melee, without the advantage of a suprise attack, his primary attack probably only has fair odds of hitting. His secondary attack probably won't hit at all.
So don't worry about sneak attack. Combat is rough enough on the poor thief as is.
Hope that helps.