I don't know is the simple answer. I will have to drill down into those numbers and compare panel systems vs. the roof tile system. They don't give full coverage with the Tesla roofs, because they need clearance from chimneys and stuff (or so they say) They also didn't include a wattage estimate, I will read a lot more before I spend that money.
The battery is $7k, and I could build a hell of an array of batteries for that. I think that is the weak link in the Tesla system.