Yeah i have been using Zorin for a bit and it is a little too much for my dumb laptop that can't run shit. (I like to experiment so i'm trying Arch for the first time)
More than distros, it's the desktop environment
Arch may be ever so slightly lighter but it's little to nothing, use something with XFCE or LXQT (Zorin Lite has XFCE) and it'll prob run better