Can somebody explain why this failed?

[| Nemesis |]

Hey

this is my assassin power with 200mil planets

Assassin Power 36,300,000,000,000

and this was my targets assassin power

Assassin Capacity: 32,400,000,000,000

I dropped my rank so that i had the 130% rank modifier but i still failed even tho i sent in all 200mil assassins. I`m not much of a seasoned player when it comes with assassins but i thought all i had to do was make my assassin number bigger than his...

Can anyone explain why i failed plz?

*expects bragging from my target for failing

[Manetheren]

Probably on alert.. critical doubles their action from what I remember.

[chargin]

critical is 70% more...