Geekbench scores much higher on Ubuntu 20.04 vs current Manjaro

The scores in the region:
9xxx are Ubuntu
15xx Surface Pro 5 Manjaro
6xxx are Manjaro.

The ones at the bottom are oldest, before I changed from Ubuntu to Manjaro.

The ones at the top are most recent.

So, the 9xxx are Ubuntu, fresh install by Dell. 6xxx fresh install of Manjaro by me. The difference is between fresh installs of Ubuntu Gnome and Manjaro KDE.

I hope this is clearer and someone can help me understand why Ubuntu seems to have 50% greater scores.