User blog comment:James12708/Reapers VS. Forerunners VS. Angels from Darksiders VS. Humanity from Halo VS. Council and humanity from Mass Effect VS. Imperium of Man/@comment-4967682-20130116065115/@comment-4967682-20130116183406

Correction: they have two types of ships larger than a Reaper. Assault carriers and Supercarriers. Both of which are rare. Their most common capital ship is the CCS-class battlecruiser, which is smaller and much weaker than a Reaper.

Industrial advantage wouldn't matter. The Reapers don't have any planets and don't need go maintain supply lines. Nothing's stopping them from just showing up and mauling every industrial center like they did in Mass Effect 3 on the first day of the invasion. A single Reaper can depopulate an entire planet in a day. So yeah, industrial advantage wouldn't matter.