My understanding was the other way around. And so contrast is the right term.
This is a good point. However, everytime I’ve used this method the 1st overspeed rep is way off the quality of the 2nd and 3rd. The potentiation ‘window’ may also be lengthened as the resistance exercise is repeated, then the 1st OS adds another huge CNS stimulus… probably potentiating the later reps even further.