[nathankaye]

Hard to say from here, but they look circular to me - as if someone has buffed the glass with a sponge or similar after scraping the stickers off. Doesn't look like a wfp brush scratch at all 

I would also agree with this.
You may recall a good while back, i was accused of scratching the glass. I also did a video where i scrub my brush hard in a pile of grit and cleaned some glass. Not sure if thats still on my youtube channel or if i deleted it.
However, i firmly explained how it could not be me and i would firmly defend myself to that effect.   I have heard nothing back in a very long time

[colin bird]

i moved into a new build house in october,all widows looked ok, BUT when the sun came out,several windows and patio doors are scratched and need to be replaced.

[Arnold Palmer]

Full on Shaggy.