60x60x60 is 60 hours, not 1 hour. 1 hour is 3600 seconds.
therefore 1 million queries per hour equal ~280 queries per second.
So I think my point still stand: that number is as low as you can get for any rdbms.
But the number was so low I couldn't help but point out that this was more likely to convince me that mongo is a joke then a usable database