[SamandMax]

That's a good question. I guess the stealth in games like Oblivion and Fallout is more stats-based and less organic while something like Splinter Cell relies on actually using all of your skills and techniques to stay in the shadows and avoid detection.

I prefer the stealth in action games because they're better designed for it, I've never been a big fan of the stealth in an RPG because the A.I. isn't usually good enough for it to work properly. Alpha Protocol is a good example of an RPG pretty much ruined because the stealth is handled so poorly.