Sounds like the occupants went to a gunfight with a squirt gun.
pistols against an AR-15, if the range is the length of an average lawn, the guy with the rifle has a big advantage.
From the spent cartridges shown in the video, it looks like they were inaccurately firing one or more hand guns, while the homeowner returned fire with aimed shots from an AR. Aimed fire from a long gun wins every time.