I think the problem is with Wisdom counting as the perception stat. I think if it was Inteligence that makes just as much sense and you get an archetype of a smart, quick witted rogue.
"Smart" and "Stupid" are relative pejoratives. There are many people with exceptional intelligence and education that are myopic, clueless in social situations, and lack a well developed capacity for intuition or inductive reasoning. They have high Intelligence and terrible Wisdom and Charisma scores. They do not have the attributes of a smart, quick witted rogue. They do have huge bonuses to knowledge skill checks and logic puzzles.
The core skills of a rogue aren't any more academic or logic-based than the fighter knowing how to best employ a weapon. Beyond the physical graces the Rogue's skills are practiced crafts, talent for deception, honed intuition, street-smarts, and awareness of his physical and social surroundings.
You could certainly have a Rogue with higher Intelligence who is good at designing traps, plans, organization, and is pretty well-read to boot - it just isn't strictly necessary to be an able tomb-robber.
The straw that breaks the camel's back when it comes to searching and spotting would be animals. High animal intelligence is a 2 or 3. That's a -4 to Intelligence checks. They see and sense things humans with 18 Intelligence have no hope of becoming aware of. They fall into traps not because they don't perceive the physical presence of the mechanism but because they can't imagine the threat it presents. When it comes to things they instinctive identify as a threat or food source they spot and respond with amazing speed and accuracy.
If you have Intelligence and Wisdom in the same game
Awareness and
Intuition largely fall into the sphere of Wisdom while
Recall and
Reason largely fall into the sphere of Intelligence.
- Marty Lund