What's best or does it matter:
- Having 3 triggers each with its own 1 event doing the same action
- Having 1 trigger with 3 events doing the same action
I feel the question being on the silly and trivial side but it might as well be asked.
What's best or does it matter:
The more specific the trigger is, the quicker it runs. I'd prefer three very finely tuned and configured triggers over a single one that may be too broad.
However, you should also aim for the least amount of triggers possible, so if you want to perform multiple actions based on the same events, then a single trigger is better.