I found the issue. Based on the way Tchalla says it, he acknowledges that Tchaka is not stronger than Cap by saying he out maneuvered him.
Then after a little checking, it looks like 616 Cap is listed as lifting 800lbs with straining effort. Which isn't so strong that a skilled human couldn't win a fight.
Either way, I would say that is well below what The Champion would see as a challenge. Who is listed as being capable of lifting 100 tons.
Have you read Reginald Hudlin's seminal run on BP? In his groundbreaking first 6 issues...WHO IS THE BLACK PANTHER...we have T'Chaka and Captain America square off [ this was later retconned into Azziri the Wise vs Cap ]. This is the sequence that had we long suffering BP fans standing up and cheering, while pissing off so many of the LCBRD:

That's not just outmaneuvering Cap. That is flat out whoopin Cap's butt. T'Challa was pointing out that T'Chaka was unenhanced, whereas Steve Rogers IS enhanced. T'Challa was making the point that T'Chaka...born as he was, all natural...was better than Captain America AFTER Captain America was enhanced and trained to the pinnacle of U.S. military fighting efficiency, using every resource available in the USA.
Yup!

I'll add: the shade went even as far the Hollywood movie, I'm reading some of the commentary that when Killmonger was crowned King of Wakanda, the scene where he & the Wakandan Empire had planned to strike the Mystic Sanctums at New York, London & Hong Kong, dudes were saying that his plan would've failed.
I told them straight up, just like I wrote here at HEF, the battle would've been an outright slaughter.
Dudes out there said Doctor Strange would've stopped the Wakandans at the Sanctums.
I told them, did you forget that Wakandan warriors not only exist on the physical plane but in the spiritual realms as well. In the movie, it was clearly established that the Wakandans can speak directly to their ancestors for information, wisdom & guidance. Their warrior strength in the spiritual realm, as far as numbers go, is much greater.
Someone here at HEF pulled out Thanos would've stopped the Wakandans. 
I doubt that. Thanos would've joined in Killmonger's quest for retribution. 
T'Challa faced down God Doom. The same God Doom that KILLED Doctor Strange and Thanos. EASILY.

T'Challa truly isn't scurred uh no Doctor Strange. And Wakanda? Is REALLY NOT scurred of Doctor Strange. The Marvel Zombies ate Doctor Strange off top. T'Challa survived unscathed until politics changed that narrative and made T'Challa a food source for Zombie Pym. And we all know that T'Challa would off-handedly slaughter Pym. Zombified or not. The Hatut Zeraze would slaughter Pym. No contest.
Remember how Batman had mystic shields protecting his Batcave? not even Dead Man could sneak up or even make it into The Batcave without Batman's foreknowledge and permission. T'Challa? is waaay smarter than Batman. And has the greatest civilization full of "low grade peak humans" [ what a concept ] working together for more than a million years at his back, and the pinnacle expressions of humanity in theform of a million years of Black Panthers at his literal spiritual beck and call; whose wisdom he can and will call upon. See this floating Panther here amongst the ancestors of T'Challa's?

We see from Hickman's array of Panthers that at least one Panther was a terrifyingly powerful Sorcerer [ not much of a stretch to assume that that Panther was ALSO the Sorcerer Supreme before The Ancient One; or even more fittingly and in keeping with Wakanda's secrecy and isolationist policies...was the TRUE Sorcerer Supreme but The Outworlders never knew it ]. Therefore T'Challa could literally call upon the memories and magicks of this specific Sorcerer Panther should he choose.
And even if that's against T'Challa's personal character traits to go magic to magic vs Strange? T'Challa? Would Shadow Physics and Reality Particles SMOKE Doctor Strange. Easy work.
Doctor Strange and nem all...The Sorcerers Supreme...got caught slippin by The Empirikul
https://marvel.fandom.com/wiki/Empirikul_(Earth-616). Wakanda would neutralize the powers of magic used by her opponents, not only with her tech but also with her Mystic Vibranium. Wakanda..an entire civilization which has faced threats from Celestials, malevolent entities like Dormammu and greater, magicks from whole pantheons of malevolent gods, etc...is not worried bout no Doctor Strange. Wakanda...from 1,000,000 years ago...teamed up wit hthe likes of Star Brand, Young Odin, The Phoenix Force, Hulk, and Ghost Rider.
Wakanda would smoove dog walk Doctor Strange. Strange would need a whoooole looootta tech on his side, and the combined power of all The Avengers Active and Reserve roster, to even make it a fight. And they'd still lose. Wakanda...little Wakanda...can stand off the combined powers of all the countries in the world PLUS the 9 Realms. She has done similar feats before in her past...or at least we can assume that she virtually mandatorily had to do so. Having kicked the Kree off the planet, having been around long before The Inhumans, having interacted with pantheons like The Norse and Olympian Gods and every other Pantheon of Gods as they all have at some point cast their covetous eyes toward Afrika...or sought to dominate all of humanity, or embroil all of humanity in the aftermath of their Godly schemes. None of which would be allowed by Wakanda.