lol. i guess you missed my point. the point is:
1) it's easier to deal with 4 people who are, for example, all south of you than 1 each on your north, south, east and west sides
2) the more distance between oneself and multiple attackers, the narrower the field of sight one will need to maintain in order to watch them all
3) if moving out of the center, they can't all be closest, so presumably the one closest will pose the most immediate threat, and should be dealt with first.
anyway, i know nothing about such things, so i'm just talking out my hat.