To answer your questions is the RCMP Drug units like the DEA....yes and no!
Muncipal drug sections in contract Provinces are going after street level trafficking, dial a dope, grows, small labs ect and low level UC's. These muncipal sections are small, the one that I belonged to was commanded by a Cpl and had 4 Cst's. Larger muncipal detachments I.E Surrey would have larger sections.
Federal Drug Sections cover off for an RCMP Division I.E E Div (BC), they have significantly more manpower 50-100 persons (more if required). They take on food groups, bikers, Asian organized crime, trad OC, mega labs, mother ships and large scale conspiracys to import. Their files can last for years and can run well into the millions of dollars. They both coordinate and work internationally. This is the closest to the DEA that you will get.
You do not just roll into a Fed Drug Section here in Western Canada, without first putting in your time doing GD in a detachment. If posted straight from training to non-contract provinces (Ont and Que) you may get posted straight to a Fed Drugs unit.....but generally this is not good to do as you miss out on all the GD development you get as a uniformed member humping calls!
Hope this helps.
Noneck