Board Thread:Questions and Answers/@comment-26558885-20150902065429/@comment-24152851-20150904234051

The Incurseons keep attacking planets with low level defence and even then they don't always succeed. Exactly Ben and Rook stop them each time in one episode, while for the Highbreed It took Ben 2 seasons to stop them conquering one planet.

Probably because earth had a lot of resources they wanted, and they wished to get as many DNAlien servants without being discovered. Plus the Earth is heavily defended by the Omnitrix wielder and his team, while the Incurseons attack many defenceless planets like Rook's homeworld.

Ben never talk?

Swampfire: "Until you give the order the whole invasion is over"

Humungousaur: "What have you got to gain from attacking us?"

Then they find out the Highbreed are dying so Ben uses the Omnitrix to change their DNA.

I don't know why you brought all this up. What does it matter how they were defeated. The Highbreed still accomplished more. If there was no Ben Tennyson and Omnitrix, then whole universe is dead. But without Ben, the Earth would still resist the Imcurseons. In fact Ben's presence madr it worse because Attea had a personal grudge.

In conclusion:
 * Highbreed attack whole Universe at once, Incurseons a few planets at a time.
 * It takes 2 seasons to stop Highbreed from attacking one planet, while it takes 1/2 episodes to drive off Incurseons from one planet.
 * Highbreed are superior in technology and powers
 * Highbreed only took so long because they're subtle and not impulsive like the Incurseons