It can give you some idea but is still a 'crap shoot' unless there is varifiable type ins with ext.
I own a name dodgexxxyyy.com (3 words). The 3 words have an OVT of 2070, dodgexxxyyy has zero and dodgexxxyyy.com has zero. It gets about 7 uniques/day at Sedo and a click thru rate of about 30%. Go figure.
I have another xxxxpoker.com where xxxx has OVT of 350,000+ and y'all know poker OVT, xxxx poker = 0, xxxxpoker = 0 and xxxxpoker.com = 0. Gets about 10 uniques/day but no click thrus. ?????
We are all gamblers at heart.