The diffrence is that scourge didn't have, you know spaceships. Going against guys with axes. And infinite numbers. And scourge wasn't 1/1000 as pretensional.
And all you listed, doesn't really make them look dangerous, it doesn't even reach bare minimum. The fact that most people escapes broken shore, makes that trap pretty underwhelming. I mean, legion has power ranger villains had, they do something midly annoying at start, and then they die. Without putting much of fight.