While I also doubt the numbers, $1M in fare revenue != $1M in operating cost. Most public transit systems are heavily subsidized.
That said, https://edmontonsun.com/opinion/columnists/gunter-edmonton-t... gives much higher numbers operating costs and fare revenues.
> In a report released Tuesday, Wiun revealed the cost to operate Edmonton Transit went from $105 million a year in 2000 to $327 million last year.
Maybe a lot of the revenue comes from transit passes and/or card payments and the 20% are supposed to represent only tickets sold for cash?
Edit: Just saw the year, so you'd have to adjust that for inflation again too, but credit cards likely weren't a thing for transit passes.