Hi Cymbql,
You must have gotten your wires seriously crossed!
As bronze is an alloy, you can not have more (or less) bronze in your cymbals.
Bronze is an alloy (mixture or composition) of copper and tin (plus some small percentages of secret additions only known to the cymbal manufacturers)
In laymans terms, bronze B8 has 92%copper and 8%tin.
B20 has 80% copper and 20% tin.
Brass is an alloy of copper and zinc. (cheap stuff)
So what you CAN have more- or less- off in your cymbals is copper or tin,
providing that you talk about bronze cymbals, and not brass or titanium alloys.
Cheers and happy drumming,
Harry