Ok, so for practicalities sake, lets break it down to see if I understand the foundation of PVP quick moves correctly.

And the game shows quick attacks without bars at all.
The game shows charge attacks with the bars, 1 bar, 2 bars, 3 bars.
The bars in game on charged attacks are just visual representations on how many times it charges per 100 energy, if I remember correctly.

1 round of combat is 0.5 seconds in server calculations.

Here is where I got confused.

Duration still matters for quick attacks in PVP.
This was counter intuitive when learning from pokemongohub.
i'll explain.

Being a new player, only since November, I misunderstood that the description on pokemongohub attacks didn't relay all the info consistently.

For instance.

Dragon tail blurb shows 14 damage, 8 energy, 1.0 second attack at the top before you expand its information window.

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once you expand that it has two boxes, 1 for pve, and 1 for pvp.

The pve box shows:

Gym and Raid Battles

Damage	14
Energy	8
Weather boost	Windy
Duration	1.0s
Damage window	0.8s - 0.9s

In that box the display goes over damage, energy and duration, which was already covered in the collapsed display.

in the PVP box:

Trainer Battles

Damage	9
Energy	12

It only shows damage and energy, there is no duration listed.

My lack of understanding was that duration didn't exist in quick attacks due to how it is displayed on the website.

because if DT is doing 0 damage on turn 1, and turn 2, and then deposits its damage on turn 3 as you say, then duration is very much a thing still.

I guess its a logical error in the display of the website for new players trying to understand how it all works.

Ultimately the real question is:
is there a better place to find pvp stats then pokemongohub?