Most people assume that the highest bidder will always get the nod from a home seller, but in many situations this is not the case. The highest bidder does not always win. A smarter seller will often accept a lower offer from someone who is certain to qualify for a mortgage rather than worry about a financially shaky buyer who might not even qualify for a loan to consummate the sale.
If the market is one where homes don’t stay available for even a short time at the asking price, the buyer might want to make the offer one that will be hard to refuse.

For example, sellers are very impressed if you can strike the finance contingency clause from the contract. (This is the clause that releases the buyer from the contract without losing the deposit if he cannot qualify for a mortgage.) However, do not even CONSIDER scratching the mortgage contingency clause unless you have the cash on hand to complete the transaction.