Thrust inconsistent in SET_ATTITUDE_TARGET and ATTITUDE_TARGET mavlink messages

According to mavlink documentation the ATTITUDE_TARGET should match SET_ATTITUDE_TARGET
https://mavlink.io/en/messages/common.html#ATTITUDE_TARGET
However, according to the source code this is not the case


_throttle_in is what is send as a thrust in ATTITUDE_TARGET. From my understanding the thrust which is send in SET_ATTITUDE_TARGET message is the output thrust (or something very close to it).
I don’t know is it a bug or documentation issue.
Is there a mavlink message which can be used to estimate real output thrust? For example I’m flying in althold and can see what thurst level is currently being used.
I guess nobody can answer better than @Leonardthall