I've ridden Bird scooters (which are just a modified version of this [1]) quite a few times in San Francisco, and while they can usually accelerate a little faster from a stop than most cyclists do, I've found it easy to just match acceleration with the cyclist in front of me. On flat ground you'll probably end up cruising at a similar speed to most cyclists, though there are certainly outliers in both directions.

[1] https://www.amazon.com/Electric-long-range-Fold-n-Carry-Ultr...