As you want to get the details of Soft Skills VS Technical Knowledge which is more important for a good career so here is the information of the same for you:

In you take the term of placement then you must have good Soft Skills and Technical Knowledge as both will play a major role

If you want to make career in software side then Soft Skills will play major role but technical Knowledge will also important

And if you want to make you career in core side then technical knowledge will be given importance over soft skills but soft skills can't be neglected