Charr is not a world champion. He has the regular WBA belt. Joshua's the current WBA champion. Also, Charr wasn't in the top 10 at the time and still isn't, so Briedis knocking out a mediocre heavyweight doesn't mean much. Duhaupas vs. Charr This content is protected Charr getting outboxed. Povetkin vs. Charr This content is protected Povetkin easily destroyinh Charr. Vitali vs. Charr This content is protected A 41 year old shot Vitali using Charr for target practice.
Yeah, I know Charr is far from the HW elite despite his fake WBA regular belt, and he's not top 10 as you say. But still, KO-ing him out cold in 5 was an impressive performance.
Loma might be better h2h overall. Loma would probably clown a Briedis level talent but at the same time Usyk would have never lost to a Salido level guy.