While I understand your view, and have witnessed from M$, Canonical and gnome, I wonder what you are specifically looking for. Everyone's experience will be different, due to preference, hardware and their own opinions. One person that has a simple issue could state that it's the worst OS ever, while someone who fights to get every piece of new hardware to work on a Linux OS may state it's the best in the world. It is based on perception and less on comparable fact because of the various hardware combinations and opinions possible.
I am running an Asus Tuf Gaming A17 laptop with Zorin 16 and Win 10 dual boot. I have two Samsung 970 NVMe terabyte drives and 32 gigs of ram. My experience is that it has run faster than Ubuntu, Pop OS, Puppy OS and Xubuntu (if only comparing Linux Distros). It also performs better than Win10. Applications open faster, it takes no time to list the contents of the drive in the file explorer. Since the alpha build of 16 it has been a stable, efficient, fast OS that has only improved with hardware support and minor (mostly aesthetic) bug fixes. Security and kernel updates are frequent to attain the support intended by the development team. I personally don't use gnome and have been running cinnamon while also testing XFCE and KDE environments. Not once has Zorin 16 ever slowed or faltered.
You want direct comparison, download and try it. It seems what you are looking for is the literal explanation of the experience, and nothing we will say is going to satisfy your curiosity or be enough to convince you of it's performance. Even graphs and numbers would be called into question by your skepticism. It is free...try it. If you find it to be everything you wanted an are looking for, consider supporting the development so it doesn't fall to the wayside and disappear. If you don't find it to meet your needs, you've lost nothing but time and a few write cycles. Your skepticism will create doubt until you try it for yourself.
Whatever you decide, please don't put these volunteers down for attempting to share the experience and enlighten you to the positive experience that Zorin has been to them. This is both disrespectful and shows what you think of others' opinions, saying much of your character.
I do hope this has been helpful and will aid you in your decision.