A few notes about the video. The highlights come from three games at a prep school tournament back east. The teams that Montverde and Mbah a Moute face are pretty talented, with some having many D-1 players. Compared to other videos of high school games, there are quite a few more players in these games that have talent -- and size -- so Mbah a Moute might not appear as big as he might if he were playing against teams with no D-1 players. Also, don't pay attention to the announcer and his identification of the players -- he made quite a few errors, mixing up players very often.
Mbah a Moute is #1, first in dark blue, and then halfway through the video in white.