If memory serves (and sometimes it's on vacation), Ethiopia has a wide variety of arms (fairly reliable stuff, just not all of it up to date) from manufacturers all over the world, and plenty of if. The al Qaeda and Hizzies specialize in a sort of "wall of sound" approach derived from Soviet tactics developed in WWII, as well as hit and run tactics against operationally superior foes (like the US in Iraq and Afghanistan, and Israel in Gaza and Lebanon).
I think Ethiopia's greatest weapon is the fact that they don't have a politically correct anchor around their throats. Clearly they recognize the threat they face and they aren't making any bones about it.
Really quite admirable.