Toxic Rain Bow

Hi, Newbe in ranger char (and has a matter of fact : in Toxic Rain) I have a little quesion here :



The Bow To the left is told to me by PoB to have 20% more Dot than The right.
The Game Doesn't seem to agry at least in numbers. What do you think about it?
Is it esentially due to Attack speed?

1. Yes.
2. In-game numbers are notoriously poor to assess TR damage.

Many thanks for the enlightening reply

TR scales extremely well with attack speed, as long as you can solve the mana expenditure.