Well by assume I mean in FF7 I recall you'd see a lot of say 4-5 enemies per random encounter. In a game where you got to use an All materia to just make the spell hit everything, it seems like these encounters are designed with Enemy Skills in mind (Beta, Aqualung, etc., etc) that easily wipes out a large pack of weak enemies. Of course there was nothing hard about killing them one at a time, either, just takes longer.