Yes, in terms of leadership Brownlee is reliable and with experienced on how coach Tim work with his players I believe that it won't be hard for him to decide in taking over when the team needed him the most, plus the players who's playing around him is not new most of them already have that chance to play alongside with him.
Honestly, that was the key reason why before, Justin Brownlee was even pushed up by some fans to play in the FIBA World Cup instead of Jordan Clarkson, even though the latter is playing at an NBA-caliber level. There's a clear ball rotation if Brownlee is on the floor, unlike Clarkson who mostly, plays in isolation and and designed for him.
Coach Tim also knows how to utilize each player on the current roster since it's not new to him handling these guys, especially his Ginebra players.
Excited to see their match against Jordan a week from now, the toughest team in their bracket.
Maybe they will try again next time with Brownlee if he can still play, or perhaps the outcome of this tournament will be the deciding factor in choosing between the two. If Gilas wins the gold, I think they will stick with Brownlee, as that way they will be able to save some money compared to Clarkson, whom they reportedly paid $1 million.