Gia, that's really hard to tell if the blowout is better but I feel I have the same issues.
I think I read somewhere that curly hair because of its shape tends to not be moisturized on the whole lenghth or something.
In my experience, my hair does feel more moisturized through and through when I keep it straight by blowing it out. But I think it depends also a lot of the kind of water you use, and the kind of weather you're under.
In the Paris area where I live, especially now in the winter, the water is very hard so unless if I use bottled water when I let my hair dry naturally it always feels and is dry, brittle.
Now, when I go to Africa or even during summer in France, if I let my hair air-dry, it's smoother, brighter and I can achieve "nice" curls or if I keep it straight it's just less of a hassle to manage.
I recently changed a bit my pre shampoo routine and I do a lot of oil deep treatment and I feel like it's working.
I use René Furterer Complexe 5 which has essential oils that helps activate the scalp blood circulation and I use an oil based treatment on the hair which contains olive, jojoba, avocado and some rare oils of Mongongo and Karanja (I didn't know about those before...). After rinsing it out, I shampoo and condition.