How is it guaranteed?
Per your argument, 5,000,002 votes.
There are 5M shares = 5M*11 = 55,000,000 votes.
That means there are 55,000,000 - 5,000,002 = 49,999,998 votes from others.
Even if they equally divide 49,999,998 votes among 11 seats.
They can put 4,545,545 votes per seat (for 11 seats)
How would you like to cast your vote to sure win 2 seats?
( you have 5,000,002 votes)