The experience would be different from either ways as watching the IPL in such a large screen never happened before.
Then, there are the other set of cricket fans who watch it from the comfort of their homes with good image, leisurely enjoying the favorite snacks/drinks. So, watching IPL live in the movie theatre would need a few adjustments. The noise would be huge and people have to accept it in the closed theatre hall. There should be a constant flow of snacks and soft drinks to keep us happy. The crowd should be sportive like in the new hangouts wherein they all cheer the batting or the fielding team. The lights need to come on at the end of an over to break the monotony.
So, it would be a different experience, who much we would like it will depend on the crowd and the arrangements.