When you put them side by side like that, it does look a little sketchy. G-Rapidash also has some weird outlines too... maybe it's just me though.
It doesn't even look like the same graphics engine!
The eye here once again doesn't look complete/very off.
I am glad that someone/some group somewhere learned how to make amazing models, but, I wish they would not be tricking people across the internet (except that it doe make the wait shorter and will enhance the experience of seeing the real additional Pokemon!)