Avengers: Infinity War - Power Ranking Every Character
14. Black Panther
Like Bucky, Black Panther is essentially a variant super-soldier, thanks to the powers gifted to him not only by his incredible technologically powered suit, but also by the special Wakandan herb that makes him a superhuman.
We don't quite know the limit of those powers yet - and indeed, T'Challa is still set to be learning them and his place in Wakanda during Black Panther - but already his suit looks like it surpasses Iron Man's abilities (it seems to be based on nano-technology like Stark's Bleeding Edge armour) and his physical powers make him look as athletic as Spider-Man, while being as strong as Captain America. That's quite a blend.
13. Wong
How you think of Wong's powers probably depends significantly on whether you think pure strength and other physical attributes like agility and speed are more valuable in a fight than magic. The correct answer there is that magic should always win.
He might be a sidekick to Doctor Strange and The Ancient One (more akin to a librarian than a warrior), but Wong is a gifted enough sorceror to have been entrusted with those positions, and was a far more powerful magic-wielder than Strange in the stand-alone (until Strange found his place as "the Chosen One, anyway).
It's unclear whether he'll be in battle a great deal, but it seems likely he'll have to be at some point as Thanos comes for the Eye of Agamotto, so we should see just how far his magical powers actually go.