I have no option to search for anything except 2vs2 as I am in rank 4.
So if you do NOT search in 2vs2 you will not find any opponent of rank 13 or higher.
At least that is my assumption.
That guy plays in rank 14.
If he can select 1vs1 or 3vs3 then he should not encounter any 2vs2 player a.k.a. any player of rank 13 or higher.