1. Judging from the current popularity, the correct answer is PlayerUnknown's Battlegrounds > Overwatch. In fact, if you want to know which game is popular, just go to the live broadcast room and you will know. The one played by the anchor is relatively popular. After all, the anchor wants to play in The one in front, otherwise who would go to see him.
2. The two games are not the same type of game. Overwatch is a team confrontation type. Although PlayerUnknown’s Battlegrounds also has a team, it is more free and casual in terms of gameplay, but it is friendly to novices. PlayerUnknown's Battlegrounds is not as good as Overwatch.