Think of a situation on summoner's rift.
Team A - Everything is as normal.
However Team B - Spawns no minions.
Team A would not get any gold from CSing relying on only Gp10s and Champion kills.
However Team B would have next to no pushing power relying on facetanking the turrets if they want to push one down.
You're allowed any champions on ether team. Which team would win?