One would need to see the underlying details to see what all is included. Does it include occasional battery replacements?
Right now EVs are probably less costly. They should be because they are more expensive to purchase initially. If not why even buy one now?
Then I would want to see future projected costs and assumed penetration rates of EVs. Once many cut over to EVs then surplus gasoline supplies should reduce the costs of gasoline while electricity costs should go up because of increased demand on electricity, etc.
All of those things can be modeled. However one can play games with assumptions whether they are on pro-EV side or pro-GAS side. I would want to see a fair modeled comparison with all the parameters exposed.
I’ve got five friends who drive Teslas. They tell me that their equivalent energy cost is running as low as a 1/4 of what gasoline would be running them. In my part of SoCal regular gas is $5.60 to $6.00. Apparently their cars include a calculator if they want to figure this out.
Two of these drivers had 2014 Model S’s. One still had 80% battery capacity when he traded it in for a 2021. The other crashed his 2014 before replacing it and he never mentioned what percentage his old battery still had.
Another EV advantage is the lack of complexity and reciprocating parts. A well designed electric motor runs a loooong time. The entire car might rust away with the motor still as good as new.