But the big difference is the Prius is a hybrid that allows unlimited range where the Leaf is limited to about 40-60 miles between charges.
Originally, the Prius was a hybrid because Toyota and Honda thought that was what buyers wanted. But the buyers converted the hybrids to plug-ins. So, Prius became a plug-in. Its not clear to me whether or nor Prius still makes the original Prius hybrid.
As near as what I can tell, the buyers want a 40 mile range in the electric mode for their daily commute and running errands, after which, if needed, they can fall back on the ICE.
OTOH, Musk seems to think an all electric with a 150-200 mile range for under $35,000(Tesla Model 3) will sell.