You have to add the weight of petrol to that (let's say 80 liters or 60kg). That's partly compensated by the weight of the electrical engine (70 pounds = 30kg) that you have to add to the Tesla.
=> all else being equal, the Tesla will be heavier.
However, 'All else being equal' currently is a bit debatable, I think. Tesla seems to have optimized further for weight than conventional manufacturers do.