browsersync syncs up everything, so I'm sort of failing to see the difference between this and a few tiled windows side by side (what I currently do) with brows

browsersync syncs up everything, so I'm sort of failing to see the difference between this and a few tiled windows side by side (what I currently do) with browsersync sync'ing scrolling and clicking. You're likely already using it as part of your webpack dev flow anyways.