Having owned and cooked lots of food on kettles and a PBC myself... and now being a pellethead convert, I can say without hesitation that IMO pellet cooking is easier and more convenient in several ways. Let me explain...
1) I can walk out and flip a switch, set an exact temp and walk back inside.
2) The cooker will come up to that set temp and park it there with little fluctuation for the entire duration of the cook with no user interaction as the controller compensates for all weather conditions.
3) The smoke profile is the same every single time. Recipes/results are easily repeatable.
4) When cooks are based on a set meal time, you can easily turn temps down or crank them up to speed things up slow them down. I can do it from my phone in fact.
5) The clean up after a cook takes a few mins and I am ready for the next adventure.
These are the things that jump out to me with pellet cookers.
Now the PBC. It’s an amazingly brain dead easy to use cooker... lots to love about it. And it puts out great results as you state. Is it as easy and convenient as a pellet cooker? Not IMHO. Why?
1) You’re manually lighting a fire.
2) You’re having to watch your time as to make sure the charcoal is dumped in not to soon and not to late.
3) There were numerous times with my PBC where weather affected it. More often than not when this happened it would start running to cool. I had to watch for that and crack the lid on occasion to bring temp back up.
4) On a few occasions, I had ribs drop from the hooks. Yes they were hooked according to directions, but it still happened a few times. I had to watch for this.
5) I could never time meals as precisely when cooking on my PBC like I can on my pellet cooker.
Bottomline, the PBC and pellet cookers are both fantastic options. They each have their strengths/weaknesses. Both are very different from each other. But for ease of use and consistency, I do not think you will beat a pellet cooker.
Just my 2 cents