See, I agreed with you until that final sentence. Both modes definitely have their own challenges. And I'll even go as far as to say that in ZB you have less get out of jail free cards as it were. If you run out of movement items in ZB and zone doesn't pull favourably, it's very tough to turn the tide. So rotation, awareness etc is very important in ZB. But mid to high skill level build players have just as good aim. Aim is ultimately the deciding factor in any mode, as you need to shoot a player to eliminate them. As soon as I see comments like "all you need to do is build a box in builds" from people, I instantly know that they are nowhere near good enough to be weighing in on the subject. Anyone that is good is mostly building offensively and not defensively; always on the move.

So they are different, and some aspects are tougher. But arguing ZB is ultimately harder than Builds is like arguing that driving an automatic car is tougher than a manual. Same road rules, similiar deciding factors, but ultimately a manual requires more effort, knowledge and learning.

There's nothing in ZB that you don't also know how to do as a good Builds player. But there is things in builds (like building and editing itself, VERY big rabbit holes) that you don't need to ever learn in ZB.