In the first case, they will hire you, but will offer a salary three times lower and career growth to the head in 5 years (hint: there will be no career growth, although.... In our country, as it seems to me, just such employees grow up to chiefs - but it is not because of IQ)/.
In the second case - long will be teased at the interview, and deliberately fail - do not have too smart - they do not get along in a team - and there is a big risk that within 5 years, they just exactly sell out the boss (or they themselves will quickly leave when they understand what is happening)
So you have to be moderately stupid!
Sometimes they even give you an inaccurate test to fail you, so you should pay attention to the test itself and not trust it completely. If you are given a test such as iq-global-test.com, then you should not worry.