Are these around on Uth?

I'm talking about the mechanic that averages your swingspeed to whatever your ((MH+OH) /2) is.
The way I think it's supposed to be is that you get the new averaged swingspeed but your damage stays the same. Is this the case?


Simplified example:
Weapon 1: 4.0spd, hits for 100 dmg
Weapon 2: 2.0spd, hits for 25 dmg

Would average to 3.0spd but still do 100+25 damage rather than adjusting mainhand down etc.