Well if my own computer (or anyone elses) can simulate thousands of matches each day using Football or Championship Manager, then it doesn't take much for Nordeus to calculate all their games on their servers using similar software.
250,000+ Football Manager matches can be generated on my own laptop a day and these matches can be viewed with highlights after they have all been generated.
Lets say 100,000 Teams per top eleven server playing 2 matches/day each, thats 100,000 matches per server and they only have minimal data for statistics compared to Football Manager 2013.