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?