Actually, tennis rackets actually have a lot to do with feel, and for me at least it is hit or miss when I order tennis rackets or table tennis rackets. It's actually harder and more expensive to get exactly the right racket. But for table tennis in particular, there are generally more reviews and sites that are more dedicated to objectively measuring the speed, spin, weight, tackiness, hollowness, throw angle, close-to-table performance, far-from-table performance, and actually tons more specifications that are important, and also there's also the issue of mixing and matching rubbers to blades, and using the right rubber on the forehand/backhand, etc. etc. I feel it is the same for regular tennis, but I have less expertise in that.
/rant.