The differences are a bit on the subtle side. First, as Corinth pointed out, it gives each race/species the ability to specialize. You can create a basic racial template (all the Whos down in Whoville get +2 to Perform (Singing Christmas Carols)). Then, you can easily expand on that for castes, subraces, and occupations within the race (all Who children gain +2 gear picks on Christmas morning).
Also, because the system is fairly rigid and well-defined, it's easy for the developers to make sure that all the races, and human specialties, are balanced against each other.
Finally, for me at least, the species descriptions in Stargate are just plain easier to read and understand. Not a mechanical difference, and certainly a personal preference, but there it is.
Oh, there's also the fact that it ends up giving every character an extra feat at first level. And, that feat is tied to how the character grew up. I think that's cool.
So, in truth, it's not what you might call significantly different. Just cleaned up a bit.
Also, because the system is fairly rigid and well-defined, it's easy for the developers to make sure that all the races, and human specialties, are balanced against each other.
Finally, for me at least, the species descriptions in Stargate are just plain easier to read and understand. Not a mechanical difference, and certainly a personal preference, but there it is.
Oh, there's also the fact that it ends up giving every character an extra feat at first level. And, that feat is tied to how the character grew up. I think that's cool.
So, in truth, it's not what you might call significantly different. Just cleaned up a bit.