Ok, than I say otherwise.
The groups can be measured by their goal, or they appearance in the anime. As I yet to see all groups can only judge by their appointed goal:
- Team Plasma: aside the one abusing leader, their goal is to stop the pitfight-society torturing animals. I like the sound of it.
- Team Flare (not yet in the anime) is told to make the world to their liking. Pretty obvious tyranny-operation, very similar to Team Rocket by standard, but with a solution that is at least in theory could be achieved.
- Team Rocket goes straight for the money, which is a pretty obvious goal. But their basis of work is stealing pokemon, what is impossible to do thanks to the brainwashing-technology of the pokeballs. Thus they are failure.
- Team Magma wants to melt the whole planet to lava, or at least bad dry it to a desert. They are insane, although they might work by design-flow, so theyare slightly better then Team Aqua..
- Team Aqua wants to drown the world. They are practically insane.
- Team Galaxy wants to destroy the whole Universe. They are utterly mad, making them the worst of the groups.