I'm pretty sure that Chrome does have a distinction between loaded and unloaded tabs (suspended tabs, maybe?), but it definitely manages tabs in a different way

I'm pretty sure that Chrome does have a distinction between loaded and unloaded tabs (suspended tabs, maybe?), but it definitely manages tabs in a different way from Firefox and Safari. Both Chrome and Firefox can trivially handle 100 suspended tabs on any machine; both would struggle with that many active tabs if the machine didn't have enough RAM to fit them all. This metric really only has to do with the amount of memory that a machine has, in my experience.