Once again, all these charts, and arguments cloud the basic issue.

Why are there different weight rules for planes based on chosen power system?

Using the logic being argued here:

Why not different rules based on composite VS wood construction?

Why not different rules based on mono-wing VS Bi-Planes?

Why not different rules based on % of nitro?

Why not different rules based on CDI or not?

In my opinion, unless you are trying toprotecting some legacy turf, all planes should be weighed the same.Ready to fly the sequence, if EP with batteries, if IC fuel tank full. This is the easiest to monitor, and is the fairest. Simple.