Badminton vs tennis, settled with real numbers: the smaller, faster shuttle game versus the heavier, more powerful ball game. We compare court size, net height, serve and projectile speeds, scoring, calories and how hard each is to learn — and say plainly which sport wins on each axis. Badminton's shuttle is far faster off the racket; tennis's ball is heavier and the rallies last longer. If you're choosing between them, this is the honest head-to-head.