Thank you for correcting me.That idea is half a century out of date. Bronze is just as hard as medium carbon steel and is superior to a lot of early iron tools and weapons. Iron doesn't begin to surpass bronze until the intricacies of quench hardened steel are understood. Anything written by Tylecote has all the data you need.
To get it clear in my mind, did the neolithic people have bronze? I thought that didn't happen until the bronze age.