It's extremely easy when you manipulate and log in daily. This is exactly what I mean. Some players need the wins to keep playing. So sick of reading these people talk like everyone wants a challenge. As if they are representative of millions of users
Probability depends on alot of factors. How well trained your players are? How many troll matches? How active you are? Bonuses and such. Good tactics and skills when facing other strong manipulators and such. But the rate of quadruples is still high.