I would only say this.....BOTH! yes both are important...but it's only from my point of view... Good modeling and good texturing is the key! Just remeber this...(in a way we are all the pioneer in the 3d digital world...One day, we will have a hard time to say what is real and what is digital) for this last said...I think really that both are important in a model...Good details...good UVs that leads to good texturing!