???! There is NO comparison, here. They are two different products. A prudent purchaser will buy both.
Owner title insurance in all states except Pennsylvania offers some coverage for matters that may be shown by a current up to date survey. So, in PA, it's really foolish to buy without a survey. In the other states, I would still want to see the location of the lot lines, structures and easements.
Without a current survey in hand, a REAL survey, you have no idea what you are actually buying. Why take that kind of risk with your most important possession?