Register a random worthless name like 17rr6tj8nkyhvb83e4p4wkm79.com and you will see that it gets 15-50 whois queries a month. Between the bots that spam and those that keep data on whois history, the whois data counts mean nothing. Even how many people visit your lander is meaningless.
Real offers are the only indicator and those rarely happen even if you own the best domains.