For what it's worth, in the anime filler, Freeza seemed to power up when he blew off his battle armor.

[Hector]

I mean, the effort he seems to exert when blowing off his battle armor looks more like a power up.

 

[GSM123]

He was just trolling them. Vegeta isn’t even intimidated and jokes he just took his jacket off.

 

[Yoshi]

I also thought that it looked like a power up when Freeza blew off his battle armor.

 

[Hector]

He was just trolling them. Vegeta isn’t even intimidated and jokes he just took his jacket off.

For what it's worth, in the anime, Vegeta seems a little scared.

 

[theallpowerfulpuipui]

Frieza:

Vegeta:

 

[theallpowerfulpuipui]

I also thought that it looked like a power up when Freeza blew off his battle armor.

Dub line but he also grew two inches

 

[Papasmurf]

Maybe it him accessing 1% of his transformation boost, like Broly accessing the boost of Oozaru without actually transforming.

 

[Yoshi]

Sometimes it's cool to imagine his Initial True Form at 1%, and all of his Suppression Forms being beneath that percentage. But that's kind of hard to work around with the Daiz numbers and all.

 

[Papasmurf]

Sometimes it's cool to imagine his Initial True Form at 1%, and all of his Suppression Forms being beneath that percentage. But that's kind of hard to work around with the Daiz numbers and all.

If you just inflate things as muc as you want it can work I suppose.