Yes, now THAT is the difference to consider
If you are basing the efficiency and "carbon footprint" on the over all difference between ICE vs Electric then there isn't much of a difference, except electric sucks for long range and recharging time, lol
But the practical reality is that oil is finite and the Sun is not, well as far as we humans are concerned
As a group, we power hungry humans, need to find solutions
The first ICE engines couldn't compete with a horse, or even a bicycle, lol
Couldn't go very far and they were unreliable, they SUCKED big time
Yet here we are, loving our ICE over anything else, just like the people loved the horse over ICE
"Things change, always do"