Sometimes colleges make deliberately easy offers for students they like, or they later accept students who did not meet the criteria that were set (if you set offers such that fewer students pass than you have places for, it is much easier to control class sizes – look at the chaos with Covid grade inflation). So I think it’s wrong to assume that the offer made to someone being high is a particularly strong signal for how clever they are.

Clearly this PPE student has some talent for politics to be elected president of one of the more prestigious societies, so it seems right for him to have been given a place.