I dont know if it's to late to reply but there's holes in this.
Dont mean to be a naysayer but
Esdeath didnt instantly create those soldiers right there. She created them way prior than when they're revealed
The calvary was foreshadowed back during chapter 57 as the secret ace for the empire
https://official-complete-1.granpulse.us/manga/Akame-Ga-Kiru/0057-023.png
https://official-complete-1.granpulse.us/manga/Akame-Ga-Kiru/0057-024.png
This was confirmed true when they're revealed.
I dont think she should scale to even a portion of the snowstorm.
As I just showed she created those soldiers way prior.
Its revealed during that time the calvary had been training Non stop. Meaning becoming stronger than when originally created
https://official-complete-1.granpulse.us/manga/Akame-Ga-Kiru/0067-027.png
This panel also further proves how she created the calvary way prior. As her statement in the panel about the west unit coincides with her reassurance that the un being it stuck in the west is nothing to worry about back in Ch 57(posted above)
Also saying she created them instantly right there goes against the statement of the calvary training since the war happened the next day.
It's been stated they'd be a problem for average soldiers
https://official-complete-1.granpulse.us/manga/Akame-Ga-Kiru/0067-024.png
Stage 2 tatsumi even states individual ice calvary are strong
https://official-complete-1.granpulse.us/manga/Akame-Ga-Kiru/0068-027.png
the ice calvary during the war was stronger than when they were originally created due to the no stop training.
So Esdeath got back more power than she originally used to create them.
Esdeath training the ice calvary for days making them stronger coincides with her statement of how she had been storing/building up power in the ice calvary.
So esdeath doesnt take days to create enough soldiers to create the storm.
She takes days to create, then train the calvary to accumulate the power necessary to make the storm
Which is why she shouldnt scale to a portion of the storm either. Cause the power of the storm and war calvary is seperate from the power used to originally create the calvary.
Also I dont see how, even if she scaled to a portion of the power, that translates to her strength and attack power. That only means she has that amount of energy to create ice and other things.
Esdeath on a regular day doesnt scale to any part of the storm. She has no attack that level and anytime she does something large scale she has a drain in power.
Even when its activate, She gets ampped from it yea. but she hasn't done anything on the level of the claimed portion in the form of an attack or move.
Also she didnt 1 shot dragon tatsumi. She just landed a hit on him. He was right back immediately after, thanks to his regeneration.
https://official-complete-1.granpulse.us/manga/Akame-Ga-Kiru/0076-040.png
https://official-complete-1.granpulse.us/manga/Akame-Ga-Kiru/0076-041.png
Regen is cool a power but it's not good at defining someone's durability.
Landing a hit on someone doesnt mean you're on par with or above them in strength and power.
Stage 2 Tatsumi damaged and actually knocked esdeath out with one punch(despite using her ice, which is more durable than she is, to protect against the hit).
https://official-complete-1.granpulse.us/manga/Akame-Ga-Kiru/0055-041.png
https://official-complete-1.granpulse.us/manga/Akame-Ga-Kiru/0055-042.png
https://official-complete-1.granpulse.us/manga/Akame-Ga-Kiru/0055-043.png
but this didnt mean he was suddenly above esdeath.
The same applies with esdeath striking dragon tatsumi. She didnt even fight him, so I dont see how that puts her on par or above him in strength and attack power. Also She did this when the storm was active, so it doesn't apply to her normal day strength.
The robots best attack is the black orb and it only used it once. Tatsumi never toke it and neither did the robot. Esdeath is only superior to the robot in terms of range when using the storm.
Again dont mean to be a naysayer.