No, it sounds like there are clear differences in abilities.
If you think every junior/senior/staff has the same ability, you're delusional. Two people can broadly fall into the same bucket but be very different in terms of output.
Yes there are clear differences in skills. So if I'm hiring to fill a certain need, why would I consider someone who isn't skilled in that area?
Yes there are clear differences in skills. So if I'm hiring to fill a certain need, why would I consider someone who isn't skilled in that area?