Is there any inherent advantage when using multiple workers to process pieces of procedural code versus processing the entire load?

In other words, if my workflow looks like this:

1. Get work from queue0 and do A
2. Store result from A in queue1
3. Get result from queue 1 and do B
4. Store result from B in queue2
5. Get result from queue2 and do C

Is there an inherent advantage to using 3 workers who each do the entire process themselves versus 3 workers that each do a part of the work (Worker 1 does 1 & 2, worker 2 does 3 & 4, worker 3 does 5).

If we only care about working being done (finished with step 5) it would seem that it scales the same way (once you're using at least 3 workers). Maybe the big job is better because workers with that setup have less bottleneck issues?