ISSEY MIYAKEL'Eau D'Issey For Men 200ml EDT by Issey Miyake

The stuff I get from the department store lasts 10-12 hours, this stuff only lasts 4 MAX. What's going on here? Seems 100% watered down or just plain.

is this fragrance an original scent or is it fake

Some reviews say it's fake. Can you guarantee that it's authentic?

What is better eau de toilette or cologne? i had the impression the eau de toil is more concentrated, thus smelling nicer.