[exodust]

Okay, but a proper experiment would use an actual bike lock attached to a bike, not clamped in a vice.

I have the Kryptonite New York Fahgettaboudit Mini. Two cuts are needed to remove it. Along with the quality of steel, and awkwardness of cutting a lock that isn't clamped in a vice, there's no way the thief will be done in 20 seconds.

The best seems to be the Hiplok D1000, which took 20 minutes for them to cut using a corded grinder, vice and several cutting blades. https://youtu.be/GMg6zVdYI0g?t=179

The Hiplok weighs 2kg, (same as my Kryptonite), so looks like a great lock for e-bikes. Only problem is, everyone wants one and not enough supply.