Почему мистер Х, принеся такую рекомендацию, не был принят на работу?

Letter of Recommendation: While working with Mr. X, I have always found him working studiously and sincerely at his table without idling or gossiping with colleagues in the office. He seldom wastes his time on useless things. Given a job, he always finishes the given assignment in time. He is always deeply engrossed in his official work, and can never be found chitchatting in the canteen. He has absolutely no vanity in spite of his high accomplishment and profound knowledge of his field. I think he can easily be classed as outstanding, and should on no account be dispensed with. I strongly feel that Mr. X should be pushed to accept promotion, and a proposal to administration be sent away as soon as possible. Branch Manager