Photoshop vs Affinity Photo photo stack

I took a photo-stack of the roses and merged them in both Photoshop and Affinity Photo. Other than the signature add, the photos are sooc.
Thanks to madwill for suggesting Affinity Photo for photostacking! The colors on the Photoshop stack (left) are brighter, but I think the merges are about the same for this image. Affinity photo offers some fun merging options. I am really glad that I downloaded it.