Minions are better then archers in certain situations.
Archers are better then minions in certain situations.
Both can be used effectively in specific raid setups.
The archers came first, so they'll be favored by old dogs who won't be taught new tricks, but minions can certainly perform better then archers when used in certain ways, with certain troops around them.
Both have their advantages and disadvantages.
I personally only use archers to farm, because dark elixir is too precious to use for training minions every raid. However, I have also used a large amount of minions [50+] in every raid during a climb from 1700 to 2300 trophies, so I know that minions can certainly destroy a lot of bases at higher trophy levels, and they can also certainly farm.
You just have to use different troop setups with both, you can't throw minions out there with wbs/barbs/gobs/giants and expect them to do as well as archers would in that setup, and you can't throw a bunch of archers out there with balloons and expect the archers to do as well with them as minions do.

