If you speaking in general terms regarding corals vs Anemones surviving in your tank? Then yes I agree corals are hardier and dont fail as eaisily or as quickly as an anemone can.
However as far as a host goes, that depends on the type of clown that is hosting and the type of coral it chooses. There are people who have clowns hosting hammers, shrooms, and even zoa's with no issues. But more so than anemones they are much more suseptable to harm because of the clowns manner of hosting. Aggressive hosts like a maroon clown can eaisily kill a coral, as they can eaisily kill a small anemone because they are such an aggressive host. But hosting aggressivley IMO can harm a coral quicker than it can harm an anemone. Hope this helps.