Most toilets in the US, especially commercial ones, flush with sufficient water and power to remove any residuals from the bowl. Depending on circumstances, a second flush is occasionally necessary. I have monstrous digestion and have never needed a brush to finish the job; toilet brushes here are just used for periodic maintenance, to keep things shiny.
Interesting! This article confirms what you're saying: toilets in the USA generally use higher water pressure, making residual less of an issue. The more you know...
And likewise, your comment about toilet brushes was bizarre until now. TIL, indeed. :-)
Yea I'm mow super confused as to Why there is a difference.... it seems so illogical to have a toilet that can't empty itself completely when flushed...