Flower time is the same length of time. I think the advantage is a 2 week veg or straight from seed is going to get bigger in water. So bigger plants total up to more buds (not more bigger buds but i wanted too!).
The reason I think they veg so fast is they do not have to get the roots to the bottom of the pot to start shooting up. As soon as those roots hit solution they start really growing fast. And when you introduce them to 12 12 (I usually veg 1 to 2 weeks to stabalize roots) hydro plants grow faster than coco plants. Here is where they probably gain the most difference.
The coco and water systems flowered at the same pace. The water systems produced a lot more in the same veg time.
they are a different pain in the ass from coco. I will still use them all.
If a water system fails i have 4 in coco pots to the rescue. Harvest is saved!