It just says:
Corporal D Wilson M/349640 R.A.S.C[Royal Army Service Corps]
He arrived on the MACEDONIA from Bombay on 10th Apr 1920.
Dispersal area 2a.
It seems like he was already a Corporal before your ancestor was even made a Lance Corporal, so unfortunately it looks like it isn't him. I am not sure if the R.A.S.C. would involve the Black Watch. If it did, it might be him. The ship had lots of soldiers and some families of soldiers as well.
The ships lists can be pretty vague. Problem is that they will often give a surname but only the initial of the first name, and sometimes not even that. I will have another look at the ship's record to see if the Black Watch is mentioned for any of the other soldiers.