All true but ASOS actually gives more recent data. The ASOS is automated and broadcasts what it's monitor senses in real time. AWOS is recorded, updated as often as needed.
I think you are confusing AWOS with ATIS. ATIS is updated as needed or at least hourly and is a human observation, not automated(thats why the first thing spoken on an ATIS after the airport ID is "0545 Zulu OBSERVATION"
AWOS is an automated observation and is updated every time the information repeats its self. Thats why when flying an IFR approach into an uncontrolled airport in "hard" IMC conditions, you must report to the controller that you have "one-minute weather" to satisfy FAR 91.103(since there is no ATIS code).
ASOS is just the basics. AWOS is similar to ASOS but can include advanced things like the time precipitation began or ended, wind shifts, amount of precip, ext... If the station is an AO2 AWOS then it includes a discriminator that gives precipitation type. But both are "one minute weather" and both SUCK BIG TIME if you have to depend on them to be able shoot an approach in the commercial aviation world....if the weather is close to mins then you probably wont get in. An open tower with ATIS is your only savior when the wx is low and the fuel gauge is making you sweat.