You wanted clarification? I'm the wrong person to ask - I tell the truth, which tends to be a LOT more complex than you ever imagined! So, I'll try to make this make sense.
First, everyone discusses what wattage they vape at. That's a completely meaningless statistic, just like it is in the audio world. Airflow is very important, and why you can vape one build at 200W without burning, but you can vape another build at 10W and burn it.
What it comes down to is HEAT FLUX, notated in W/mm². A 32-gauge wire with 1 wrap at 10W will get a whole lot hotter than 10 wraps at the same power, because the power is spread out over a larger surface area. Same thing happens with thicker gauge wire at the same power. More wraps increases resistance, requiring more power. Thicker gauge wire decreases resistance, requiring more power. This also directly affects how long it takes for the coil to reach optimum temperature, which is where features like ProVape's BOOST come in handy - helps heat up the coil quicker.
So, that's why manufacturers recommend different powers for their coils, but that's just a ballpark, as they don't know how much airflow you'll be using. Too much and you get weak flavor and cool vape; not enough and you get burnt/dry hits.
I hope that's clear as mud, otherwise I'll need to go off the deep end and really get technical!
