Mechanics
Bakugan and B-daman are both toys that involve rolling a ball that transforms into a creature when it lands. However, the balls are different in design. Bakugan balls have a more complex, multi-part transformation mechanism, while B-daman balls are simpler and consist of a single piece that flips open.
Gameplay
Bakugan and B-daman both involve gameplay with multiple players, however, the way of gameplay is different. In Bakugan, you throw your ball onto a metal card, which causes the ball to transform into a creature and activate its ability, such as adding points to your score or dealing damage to your opponent's creatures. In B-daman, you use a launcher to shoot the balls at targets or at other players' B-daman.
Popularity
Based on sales figures and media coverage, Bakugan has been more popular than B-daman in recent years, particularly in North America. This may be due to Bakugan's more aggressive gameplay and its association with the popular anime series and video games.
Personal Preference
Ultimately, the better toy between Bakugan and B-daman is a matter of personal preference. Some players may prefer the complex transformations and strategic gameplay of Bakugan, while others may prefer the simple mechanics and fast-paced action of B-daman.