That cannot be assumed. The revised professional activities need assessment against the listed profession and actual qualifications.
Identify what changed substantively
A revised heading may leave the work unchanged; a short new clause may alter it significantly. Describe the actual assignment.
Set the advertisement beside the offer letter, the interview notes, and any written scope from the hiring manager, then mark each difference: title, seniority, listed responsibilities, tools, reporting line, and the share of time on each activity. TN is available to citizens of Canada and Mexico who have prearranged professional employment in the United States in a profession that USMCA Appendix 2 actually names, and who hold the credential that entry specifies. The Scientific Technician or Technologist entry asks instead for theoretical knowledge of a listed discipline together with work in direct support of a professional in that discipline, which is a statement about the receiving employer as much as about the applicant. The listed entry depends on working in direct support of a professional in the same designated field, so identifying that professional and their qualification is part of establishing eligibility rather than a supporting detail.