Not sure what you don't understand. If you complete the Commando course you are a Commando. There are Army and Royal Navy Commandos too & doubtless some RAF Regiment guys have passed Commando training also.
If you do the UKSF course you become a member of the SAS or SBS usually.
If you complete parachute training you get parachute pay. No-one is claiming anyone is better, it's a title.
Para's are an infantry regiment who predominantly PARAchuted into the theatre of conflict in days gone by, that's how they got the name.
Most members of the SAS and SBS come from the Marines and Para's as they already have most of the training required completed so some of them will be commandos as well.
1 The commando skills of amphibious assault using a variety of craft
2 The commando skills of cliff/vertical assault training
3 Water crossing techniques
4 Live firing Section and Troop attacks
5 The commando tests
6 The six day final exercise.
Throughout the Commando phase recruits must demonstrate the qualities inscribed on the Commando Medal i.e. determination, courage, unselfishness and cheerfulness under adversity. In short, the commando phase is about assault techniques and the demonstration of the commando ethos/attitude.
NOTE: The above is part of basic training, it is not 'further traiinng in a unit' etc. Hence, a trained RM is regarded as operationally ready for war the moment he passes out. He does not have top go and do further field firing, or go on to learn how to operate further troop level weapons. In short, the trained RM is ready for war and has the commando skills and attitude required for placing him anywhere in the world in a light raiding, SF support, expeditionary role or assault role. How many infantry finish basic training with the skills required to use all light weapons at their disposal, fight any place in the world (any unit will be packed with experienced arctic and jungle warfare guys too), yomp for miles, carry out covert amphibious and cliff assaults, etc?
I'm not trying to 'big' us up, so perhaps someone else could put it better :thumright:
Unfortunately, the RM website is incomplete (it doesn't have relevant video or many sexy pics beyond about week 16) and it describes the Commando phase as the "Command Course". How's that for an error!
(Edited for clarity. Then edited again to add another point of CLARITY!)