Give both candidates the same start and finish conditions. If one relies on a new tray, show it as an alternative workflow rather than faster evidence for the current one
For seven spacers I would pay particular attention to preparation and changeover, because a faster transfer can disappear inside the time spent arranging a small order for the demonstration.
The videos still show possible approaches, just not a fair winner. I'd ask for current-tray trials before spending time estimating an upstream change nobody has chosen