Well riflemen nearly all have the same strength, dex, projectile, and dodge stats (Gamorreans have 3 str instead) so you can identically raise every skill as a human you can as an Amani. And they can all wear armor. And all can get to level 10.
So the only effective difference is HP (higher/lower race multipler than others).
You can give humans and Amani the same defensive skill points (all races come with the same number) in dodge, and give them both Heavy Battle Armor, but as it stands in the game now, the human will have about 42% less health.
That was just the point I was trying to make. You can spend the same year getting 12 humans and 12 Abyssins to level 10, but one will naturally be superior in combat due to much larger HP, since all other variables (armor potential, skills and skill points, Level) can potentially be made identical.
But yes I also agree that a human with high dodge will likely beat an Abyssin without, even with the HP difference.