A lot of situations may arise. There are many colleges that will not accept MAH CET scores outside Maharashtra and some in Maharashtra that won't accept MAT scores. Be wise and use your discretion in using the best score for the best college. In case a college is accepting both & you have an option to choose between the two, go for the higher one usually. But that's again subject to the qualifying cutoffs, use the one that is higher than the cut off. CET cutoffs are higher in some cases. If you qualify with both, use MAT. MAT score will anyway give you a wider range of colleges.