Is it a minor or major revision, if only one of the reviewers asks for major? I got a review from a reputed Elsevier journal. There're three reviewers, one decided recommend acceptation, other recommended a minor revision and the last one recommended a major revision.
Overall, is it a major or minor revision then?
It's up to the editor to make the decision. Their job is to read the reviews and decide if the criticism is substantial enough to justify a major revision.
If the editor is lazy, they might resort to shortcuts, such as: follow the least favorable recommendation, or take the average of all recommendations. But that is a poor practice.