I'm not sure this is true. They're a lot heavier and on most cars the brakes should be powerful enough to lock the wheels which is the max braking power you're going to get.
To compare a car which is available in both ICE and EV, a 2018 Fiat 500e (electric, with a tiny battery bank good for only ~90 miles) weighs almost 3000 pounds, whereas the same car with ICE is ~2400lb.
> The 500E is a retrofit of an ICE, not a ground-up EV. All you can derive from that comparison is that retrofitting is inefficient.
That's all true, but I'm uncertain how much difference it can make. The bulk of the weight difference comes from the batteries, which will be there whether a retrofit or new design. Everything related to the ICE systems was removed, so it's not like there was any leftover weight from the conversion.
Weight distribution can likely be better in a chassis designed solely for EV, but total weight seems likely to be about the same either way.
