Hey dear, Im by far not a perfume expert but here's the difference between EDP and EDT :)
Eau de Parfum may contain 7 to 15% concentration of active ingredients. Eau de toilette usually contains about 1–6% concentrates. which is why EDP are usually more expensive and sold in smaller bottles than the EDT.
I have the EDP of Parisienne and it lasts a few hours on my skin. I still think it really depends on your body's chemical reaction! :)