They're not supposed to accept your offer.
They'll accept the best offer. If one doesn't go through, they may--or may not--accept the offer that (in their opinion) is second best. And that's not always the second highest.
$100,000. 20% down. Good credit history. Minor contingencies.
$98,000. 10% down. Weak credit history. Major contingencies (such as selling your present house).
$93,000. All cash. No contingencies; buying in "as is" condition.
A lot of people would choose that third offer, even though it's $5,000 less than yours.
A seller can choose to accept, reject, or counter any or all offers.
Hope that helps.
If that's the question....the answer is no. All offers are different. Example....you're the highest offer but you want the seller to pay some closing costs, you want an inspection, need to obtain a loan, can't close for at least 45 days, etc. Another offer is 5,000 less, buying with cash, can close in a week, do not want an inspection. If you were the seller might you not want to go with the cash offer, even though it less money?
Let me know if I didn't get the question correct.