Maricopa County had only a little over 2 MM votes. I’d like to say that was true, but sounds like bovine excrement.
How many total votes in Maricopa County?
The leak is saying there are 3,461,412 total votes. Not sure if that's for all of Arizona.
Wikipedia stats for AZ:
Biden: 1,672,143
Trump: 1,661,686
3,333,829 total
Maricopa County:
Trump: 995,665
Biden: 1,040,774
2,036,439 total
Source.