Hey that's life, kid. If you mean a first string team and a second string team then yeah that's how it oughta be. If you mean two opposing teams, well too bad, you can't trade one of your slow kids for a fast kid from the other team. And no, not everybody should get a freakin' TROPHY!
It's not equal or balanced; but it's fair. Isn't that the nature of teams that compete? Part of the contest is assembling a team that has some advantage. One team may be faster, the other may be smarter. Use the advantages you do have.