

What if the buyer takes WHOIS privacy and Escrow could not verify the ownership transfer?
What if the buyer uses different name/email in domain transfer and Escrow account, how will I convince Escrow that I have transferred the domain to buyer?
Escrow.com asks you to transfer the domain only to the email address mentioned in the transaction.
The short answer to your question is I believe Escrow.com has "ways" of finding out through their links at the registrars to verify that the domain has been transferred.