Discrepancy between probability and zero-anchored scores in anchored MaxDiff

Hello,

Zero-anchored and probability scores give me very different lists of items above the threshold. If I look at probability scores, there is only one item below the threshold (100) while zero-anchored scores split items more evenly, with roughly the same number of items above and below the threshold (0).

What can be the reason for this difference and which of the two scales should I rely on?

Many thanks,

Anna

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