I owned a 2013 leaf and had <80% after three years.
I currently have a 2014 Tesla S and it's just at 81%.
Your luck is insane or the numbers aren't right. I agree with your main point though. Replacing a battery is still way cheaper than a new car, even if you factor in other long term maintenance
All these comments are great, but the real mystery is:
Why did someone overlay a different font on top of the original graphic rather than just make a whole new graphic? Like, the work is exactly the same, and the rest of us can view sane font placement.