I frankly found it cut the "Stick It" brand perfectly, but weeding the Silhouette Brand from the mat got a bit fiddly. I think if I do it again, I will extend blade more. The Stick It brand is considerably thiner than the Silhouette Brand. At this point, I was pretty sure the Stick It brand was going to be the winner NOT!
I then proceeded. A note about the foil, it was something I had had for years and years and used with the electric hot pen, see info in photos, so not sure the age of the foil had anything to do with the test since, as you will see, the Silhouette Brand had no difficulty.
Yellow backing paper is Silhouette Brand, White is "Stick It" brand, very clean cut on the Stick It, but it didn't work as well as you can see,