If you see, movies of big heroes become blockbusters only by following a standard template (good versus bad, with the hero playing good and bashing several people in different ways). So UV is unlikely to fall into that category. There is a chance that it can go the Anbe Sivam way (commercially a dud) but given all the enthusiasm displayed (which does not seem to be manufactured), it is possible that it may not go that way. That leaves it as a decent hit (middle ground)...That was my reasoning.