Can it be said, in a general sense, that Flash channels and Raiden are made for the same purpose? Both function in a way that a prepaid channel is being created and entities within exchange value off chain. Whenever any party decides to abandon the channel, they may do so.
Remark: I know the Tangle and Ethereum are two different implementations (Blockchain vs. DAG) however I think this question is still valid since they both fall beneath the DLT umbrella and it looks to me that they are designed to enable fast micropayments, off chain.