The japanese aren't going to be letting any re supply in that area, including no new troops and no dunkirk like evacuation of the ones who are there. In melaya, the british empire has a few options, but the american forces there's between like 14 and 16. There are no al tanks in malaya. And the japanese tanks are not great tanks at all, very mediocre. But they become super weapons if they don't have to face other tanks.