Transaction ID af8044136989133d181d5899e9f6df0af99e2cf5196bc65d48a727cf3fece49d

Memo transaction

Post memo I didn't ignore what you said. In your example the characteristic c was what was being compared. So it doesn't help to compare A and B by dissimilar qualities.
Reply to memo 732172a065aad9c2eb63a26a6a8315d9611bd74e29eb2997d8f1aef51811ba62