User blog comment:Tali's no.1 fan/Most Hated Enemy Of Mass Effect/@comment-1373755-20110514172539/@comment-1746153-20110514185555

On the other hand, little space also means that all enemies come from a single direction (or at least you can find the position to make them do so), which makes them easier to kill, while on Horizon you basically have husks running at you from everywhere.