The conflict narrative between the Amarr Empire and the Minmatar Republic however is not one of parity of strength but rather an absence of it. Because the conflict is framed in terms of slavery, it strongly implies a disparity of strength between the participants in the arena of perception about them. In order to enslave another society, one needs the strength to subjugate them. Under such a narrative the ones that subjugate (Amarr) will likely be seen or portrayed as stronger than the ones they have subjugated (Minmatar).
Yes, but History seems to hint to the fact that they tried to bite a lot bigger than they can chew. Considering the sheer size of the Minmatar Empire, albeit of course ridiculously under developed compared to the Amarr Empire of the time, was already big enough. We don't have real numbers and an overview of the size of each empire centuries ago when this happened, we only know that the Minmatar had colonized like 3 solar systems. Since the raids lasted centuries, the Minmatar continued to expand while being bleed slowly by the raiders. Lore seems to tell that every major tribe already controlled several solar systems when the major Reclaiming took place centuries after the beginning.
We also don't know at all the size of the Amarr themselves. Probably bigger of course, yes, but by how much ? They certainly didn't cover what they cover today, and a lot of their planets were probably still colonies and underdeveloped worlds. Were they even more numerous than the Matari ? We don't even know that for certain. All we know is that they were able to go their way because of a huge technological gap.
Considering that today, the Matari are the most numerous in the cluster by far tells something imo.
The Minmatar do have a lot of interesting, positive, and engaging aspects to them. Unfortunately I think they will continue to be lost opportunities now that with CCP killing off Midular it really is just going to be about all about slavery with the Republic. Where failures become an exacerbation of the Minmatar portrayed as the weak victims of slavery throwing rocks impotently at Amarrian tanks.
That's one of my main gripes with the killing of Midular (besides killing one of the few remaining good leader characters...). Unlike Shakor, Midular was presented almost like a Chosen One. The chronicles about her always hinted at great destiny and things, and even if reality doesn't of course follows prophecies and Voluvals (which is very ironic, and works), the only thing we now see of Midular is that she has been the leader of a government that most Matari started to look at in disbelief more and more, and that hints at a complete failure on her side. Even the negociations she did with the Ammatar never bear any fruit, and with Heideranµ/Doriam neither.
All in all I fail to see a single redeeming quality to what Midular did and accomplished, and what I see in return is someone with the most prestigious Voluval, destiny, and admiration, that completely failed to do anything worthy of note except leading her own Republic to the wall. And that, is the whole story of the Republic. I'm not even sure it's still a republic under Shakor reforms. vOv
So yes, the issue is that while the fact that Midular the chosen one failed at anything is grimdark and all and fits to the murphy-esque setting of Eve, it depicts the faction in a very negative way and story-wise, it makes a statement, and a very negative one.