User blog comment:RemidoDosol/Subjective Standpoints: The Raildex Animes/@comment-17714224-20140516155009/@comment-188.142.149.44-20140516183110

If you look at the Index anime as an original story, it is kind of weak in terms of storytelling. Those who read the LNs KNEW that their is more to it, and enjoyed the stories animated. But to those who didn't know about the novels it is kind of strange to have little stories with the main character is the only thing to connect them. (Index 2 has the Roman Church conflict as a clear connection, so it's more coherent.) And many were disappointed with the ending, because Sherry is not good final boss material. Those who read the LNs see it as just another arc animated and it's the end only because this is how many arcs could be stuffed in a season, but to those who think it's an original anime it really was disappointing, especially after the Accelerator fight at halfpoint.

Railgun started as a manga, so it's format is easier to make into an anime, so it's more coherent. (Though the first few Level Upper accidents didn't feel connected at first.) And They made the latter half an anime-only arc, so it fit even better into the storytelling of an anime. But compared to Index, it felt less serious. The Level Upper incidents wasn't on the same level as Aurelious or the others. And it had more Slice of life, which many say is boring.

So, I think Index suffered from the convertion from LN-to-anime and it weakend it's narrative, making it boring for those who would experience a more coherent story, while Railgun suffered from the slice of life elements and less serious fights.

I think Index 2 and Railgun S will be much more appreciated, because Index 2 has more connection between it's arcs and the Sisters arc in Railgun S is packed full of awsome fights.