Monitors are designed to be viewed at close range, from multiple near angles. TVs are designed to be viewed several meters away, at roughly the same angle.

TVs play content of the same frame rate, so there's no reason for them to be any more precise. Monitors can go at very high frame rate as the content can be very fast paced, especially gaming monitors.

Freesync/gsync also integrates with the graphics card to reduce lag. This is the most expensive part of these monitors.