What this counts. GA4 totalUsers per event — unique people, not sessions. Clarity counts sessions, so its numbers are always higher. GA4 also loses roughly a quarter of traffic to ad-blockers: read the ratios here and take absolute leads and sales from GHL and Roaspy.

The rungs are counted separately. Each one asks GA4 "how many people fired this event", never "…and did it after the rung above". So a later rung can come out bigger than an earlier one — read the smaller number as the floor.

Checkout and purchase are shared. Both offer pages send buyers to the same three GoHighLevel checkouts. They are separated by quiz_version=adv. If those two rungs ever go flat while buy clicks keep coming, that tag is what to check first.