It might just be the way things are in this zone: I'd have thought that your daffodils would still have leaves. Or, even if they're winding down into browned off remains, the bulbs would still be holding their roots as active and white, whereas the Lycoris may not have started into putting out roots yet.

The Lycoris I have are also quite near the surface - necks nearly out, whereas the daffodils are often quite a lot deeper.

If all else fails - you could excavate a known patch of daffodils and check 'where they're at' .