WRB, I don't think a new bass fisherman needs high-end gear to be effective. I don't think an expert needs it either.
Today's rods, reels, and lines are extremely good at almost all levels. I do think mid-level gear is often a better value than entry-level gear in performance and durability.
With that said, some of today's high-end rods are amazing in weight and sensitivity in my opinion. They are outside of my budget, but I generally hold my own with my more budget friendly stuff. Some of the better rods are a joy to use and make a long day on the water more enjoyable. It's hard to put a price on that.
I agree with Team9nine that sensitivity is a quantifiable measurement. I also agree with Catt that there are folks who can't tell the difference in an old glass rod and a new quality graphite one, other than they might notice one is a little heavier than the other. For those folks, one rod is as good as any other.