No. I mean that it's easier to find what I'm looking for, the mods there (at least the big ones) tend to have good documentation and F.A.Q's, there's plenty of screenshots, I tend to scan through the comment section to make sure there aren't any big problems, et cetera.
This is exactly what I do before installing any mod and I'm familiar with the Nexus, although the, relatively, recent changes to the way comments are laid is a little confusing.
I've skimmed through the Steam Workshop a few times but I feel like a dog trying to learn new tricks. Also I'm not a fan of auto updating when it comes to mods. I still manually download, install and patch Nexus mods.