I don't really care for either of them. However, Origins is by far the better saga. Not only does Red actually talk and what not, but the battles and animation are better. Even the art style is better for the most part.
Generations hasn't even aired in Japan. So I am goign to assume Generations is animated by an English Company.
Generations is too short. You have all episodes averaging at about 4 minutes, give or take a minute, so that makes the total time around 72 minutes and with Origins, we have about 20 to 30 minutes more total time. And the Generation episodes are not that great. Some are badass, but most are just lack luster. Even though Origins had a lot of time skipping, it was still superior. far superior.