Yes Ann, some needles are definitely sharper than others. There does not seem to be any standard pointiness, if there is such a word. The only rule is that if you are knitting with a woven rope-like yarn as I was recently and it splits with every stitch, you can guarantee that you will only be able to find sharp needles when you need blunter ones.

Or if you are purling through the back of four stitches, it,s sod, s law that all needles you need in that size are as blunt as can be. And the LYS is shut and you need to start this project like a junkie needs their fix!!
I finished the first shrug, have just sewn it up after slogging away with 2x2 rib on190 stitches. Now I am starting the second sewing and ribbing, then it will be some little flowers for the fronts and they will be ready to go to England tomorrow.
Husband is doing the dishes so I shall be out of reach for the next two hours
Using your needle like that is definitely grounds for divorce.
My name is Betty. Have a good evening