The question to me is if attestations are all just strings anyone can write in, how to score providers weight the relative difference in influence in the score calculation they should have? 

Like if I say, "I attest to Nathan's ability to write the Attestation NIP" and at the same time say: "I attest Nathan is a good father", how does an score provider figure out that being a good father should have bigger weight in general cases but if we are talking about attestations, it should flip the weights.