Similarities..

So.. although all four of these religions have a lot of differences between them, there are a few similarities. Now, Confucianism is still the best but here's some similarities.
Confucianism believes in heaven, Hinduism believes in karma so what you give is what you get, Buddhism believes Nirvana, which Nirvana is seen simply as the cessation of suffering by some and as a heavenly paradise by others, and Daoism believes in inner harmony. These are all similar just for the simple fact that something good happens after you die. Unless, you sucked as a person, which karma would come back to bite you.