Both dramas are from the same director, and follow the same kind of story line. There are some differences among the two (I personally liked All In best) but, same premise.
The plot are about the same. Ji Sung in both drama, one was second lead one was main lead. Both partially filmed abroad. Both has gambling genre. Both has romance
In both dramas main lead has to almost turn himself into a monster in order to fight a super scary father-like figure. Both dramas show two brothers and a girl between them. So, very similar revenge stories and love stories, only the setting is different - one is about spies and narcotics and another is about gangsters and casino-hotel business.
They are action dramas filmed in different countries with handsome male leads, but I think Swallow The Sun is much better and interesting drama .
Their themes are very similar, met as children, find each other when older, fall in love. Careers different and yet always crossing paths, guns everywhere. Risking their lives everyday...ectra...Would sacrifice anything and everything just for the happiness or life of the other.
Swallow the Sun may be totally different styles, but both are full of action, romance, mystery, a crazy dad and let's not forget the Revenge! Both are incredible dramas, and also quite similar!