What program was likely used to make the models shown in this video, and how did they do the hair?

Remixt

I'm creating a game based on this cinematic https://www.youtube.com/watch?v=fjrfYZsZLJA. There is another video that overviews the creation of the cinematic, but not in much detail. I'm a software engineer, not a 3d artist so I'm not familiar with the software they are using in the breakdown video shown here: https://www.youtube.com/watch?v=8cz-LsIHL8o&t=1s. 

I've managed to create a model that matches the one in the video, but converting the hair mesh into realistic looking hair is something I don't  have any experience in. I've tried following some tutorials for Blender and Maya, but it seems that using a particle system might not be how it was done for the video. Does the software they used to make the original have a different way to do hair, and if so how might I best replicate that?

Below is a screenshot of the model before and after adding realistic textures and rendering, My model looks identicle to the one on the left, and I'm having issues in the details.

GrevSev

Looks like a lot of Maya and Zbrush being used. 

Hair were probably XGen. https://www.youtube.com/results?search_query=XGen+Braid. 

Octo

The software in the video is Maya but you could create this in any of the main 3d applications. How they did the hair in the video is not very relevant information to you since you're doing a real-time version and would need to use hair planes.

musashidan

Cinematics are pre-rendered so they essentially use an unhindered vfx/film pipeline with fully rendered hair strands with tools like xgen.

For real-time hair you would still use xgen, but the hair gets baked to a texture atlas and is mapped to hair cards. 
You say you already created the model so what package did you use, or is it a Daz/Poser character?