Ahhh, okay, so the data is fine, it's just the definition that isn't clear. They only speak of "fast charging" which can be type 2 or 3. Type 2 would generally be sufficient for local users, with type 3 being more important for trips that require a charge during, ie long distances.

With that in mind, I think type 3 chargers to highway volume may be a better metric. For example, a couple type 3s by the bridge and ferries in PEI is probably sufficient. Whereas Ontario needs significantly more along highways 11 and 17, when you spend a day crossing the province.

The total number of EV cars is less relevant than the number of EV cars that do long trips, or that would do trips if the charging potential was there.

Of course a single dedicated passenger rail line could eliminate the need all together.