If matching numbers were the whole story, numerology compatibility charts would be a single line: same number, good match. Instead, most charts lay out every possible pairing and rate them individually — which only makes sense if sameness isn't the deciding factor.
A shared life path is sometimes framed as an easy, low-friction match. But it's just as often framed as two people who lack the balancing traits the other would bring, which is why "opposite" pairings show up rated just as favorably in a lot of traditional material.