| Algarik |
I can't find anything that says that ''treated as'' counts as having the feat ''exotic weapon proficiency'' BUT as the same time, it would be asinine to say that it doesn't. The only purpose of the feat is to allow a character to wield a weapon without penalty. If they are able to wield said weapon, they should be able to qualify for feats that requires being able to wield the weapon properly.
Otherwise, it would mean that character that gains weapons and armour proficiencies through their class does not qualify for feats that require those proficiencies.