I mean if you think a country that possesses solid 3D hologram and cloaking technology isn't a superpower or that key mission objectives (as outlined in the antagonists background) were to be assassinations of key political targets which could be easier to carry out due to the undetectable nature of the clearly destructive sonic weaponry of Wakanda...

Real world examples would be the expelling of super power Russia from Afghanistan or Vietnam which America did not technically "win".