Might be controversial, though I think it's worth discussing. Is WA Tsunade really stronger than Pain Arc Tsunade?

It's widely accepted that WA Tsunade is stronger than PA Tsunade, although there is some contradicting evidence.

WA Tsunade is probably easier to scale, this Tsunade fought against Edo Madara in tandem with 4 other Kage with her Byakugo seal. Later in the war, Tsunade along with Sakura use maintain a vast healing area supporting the alliance. PA Tsunade doesn't actually fight, though she expends her Byakugo seal with it's accumulated chakra protecting/healing most of the villagers.

I suppose the crux of the argument is that PA Tsunade has larger chakra reserves stored within her Byakugo seal compared to WA Tsunade. While WA Tsunade only has a few months worth of chakra stored within her Byakugo seal. Now, does this difference equate to PA Tsunade being stronger?

Comparing to Sakura, it took her 3 years to store up enough reserves to form the Byakugo seal. Which then further increase the strength of her Chakra enhanced strength and healing abilities. If timeframe is the most important factor with Byakugo users, a Tsunade that has 20+ years of charka storage time would be stronger than a Tsunade that only has a few months of storage time, in theory.

I have other points to discuss though I would like to hear everyone's thoughts about this.