High TL 9 vs TL2+RPM

[Andreas]

Originally Posted by Wavefunction

Of course there's a pretty major risk involved with getting together a huge number of people for a sacrifice, that becomes a pretty major target for exploding.

Sure, assuming that the invaders manage to set up enough presence in each planetary orbit to detect and destroy any large group of people before the mages know about them.

Originally Posted by evileeyore

Even with magic I don't think they'd be able to match the edge high tech has... unless every other lowtechie was a Mage with time to prepare and the knowledge of what they were preparing for.

Even a single mage with a large group of sacrifices could cause a lot of damage to the invaders. Some spell effect scale very well with the amount of invested energy.