i have a wtha1 from weller and i am happy with it i am no longer using it on a regular basis and i know it is on the expensive side
so i cant say about it as pro user but i find it easy to use and it has a couple of presets that one can use for the common tasks
quick up to temp. great airflow adjustment and great temp range
i got some extra nozzles and so far it has suited me well
https://www.weller-tools.com/us/en/industrial-soldering/products/soldering-stations/wtha1P.S.
you cannot compare the two at all it is like comparing apples and melons
the japanese one has temperature profiles for removing and applying bigger chips and many other features
the cheap chinese one is all manual and i as far as i can read no mentoin of airflow