Fibers in Simpson Chubby Synthetic

Are the fibers in the Sompson Chubby 2 synthetic the same as in the Muhlë STF 2.0 brushes?

Unless there is a later version of Muhle STF that I don't have the answer is no.

I think simpson gets the same fibres that muhle uses but someone said before that simpson doesnt use the same knot. I think they are quite similar