The Si EDT for woman is actually 20ml. Guess it's a typo.
75ml of EDT, should look a lot larger than what they are showing in pic plus that is a normal size EDT bottle (though most EDT starts from 50ml)
The shampoo for men maybe because the majority of male pax on QR F? The shampoo maybe useful for beard as well.
Great effort from QR for F pax though this kinda kit costs around $120 on frangrance.net