Would you like an in-game parser?

[Reynhart]

Tell me how exactly are you supposed to tell without any feedback? As I said - The effect is short, the CD is long, it really did not seem so great.

Easy (and 100% weight free):
1) Compare the DEX bonus on your gear, and the dex bonus on the potion.
2) Realize how many ilvl you'd need to have to same gain on DEX.
3) Be amazed
Yes, the duration is short, but since you burn pretty much everything during your opening rotation, the effect is tremendous.

Getting better at dpsing is much easier with the parser than without it - or would you say that most of the players are so good they don't need the feedback parser gives them?

I never denied that. What bugs me is that people think it's necessary. I don't know if I'm really good compared to other DRG, since I don't use a parser, but what I know is that I've improved a lot without any parser, by looking at guides and videos, and training on SSS.

we are not talking about 100 dps below average >_> but more like players who are doing HALF the amount of damage as others. Tanks and healers topping the DPS meters... etc...

Like I said, several times, if you really do half the damage you're supposed to do, it either means that you failed pretty much every mechanic and died, or that your rotation is so flawed that wouldn't even beat SSS. Either way, you don't need a parser to realize that.