Is this question a real one sprouting out from the ignorance or indecisiveness of a highly employable person or a mere hypothetical one raised out of curiosity?
Your reasons for being very choosy about the highest paid job while keeping the lesser paid one as back up may sound very logical but not justifiable since both the offers are accepted by you one after another. No harm in orally citing the better offer from elsewhere to gain an edge in the salary negotiations with a prospective employer but I have my own doubt about the propriety of handing over a copy of an offer letter of one employer to another since it is confidential till its acceptance or rejection. Even after that when the second employer frankly restricts his final offer with only 50% hike and you accept that, how can you go back later?
In my opinion, it may end up in the situation that both the employers reject you as a non reliable candidate for appointment or confirmation later.
Remember please that honesty is the best policy.
10th March 2019 From India, Salem
The act of handing over offer letter of X company to Y company as bargaining chip is not in order.
Chances are bright that both the jobs may slip away with such conduct.
10th March 2019 From India, Pune
When you have decided to join company A which has offered you 100℅ hike, your accepting also offer from company B with 50℅ hike as back up is a classic case of murkier thinking. Most mean part is to share offer of A with B to negotiate a better deal. With such imprudent approach, no wonder, if you end up landing a situation of dhobi na es ghatka na us ghatka.
13th March 2019 From India, Mumbai