Can wardens detect players walking on wool? [closed]
One of Mojang developer, Kingbdogz, has confirmed that the Warden has a larger radius for hearing vibrations than the sculk sensor.
He also confirmed in another tweet that the Warden and the skulk sensor act the exact same (other than their radius).
Source, Minecraft wikia.
Unfortunately as of yet no one knows how the Warden mob is actually going to work in-game. This is because the Warden does not currently exist on any official update releases or snapshots.