Run the same resume and posting through each tool
Do not compare two scores produced from different jobs or resume versions. Inspect the extracted text, named gaps, false positives, and usefulness of the recommended next action.
Reject unsupported suggestions
A missing requirement is not permission to add it. Keep only wording supported by your real experience, and treat every generated edit as a proposal.
Choose based on repeated work
The best fit is the workflow you will actually use across several applications: scanning, editing, exporting, tracking, and returning before the next deadline.