Given the time Will puts into the game compared to me, I'd definitely call him the more solid player, but he isn't the better DK. There is so much he could do that he doesn't. Also, he's basically going to give up on DK now that everyone (aka the bigwigs) want to get rid of customs.
Here's a random scenario for you. Say your opponent was kicked or knocked off stage, and already used his jump or is coming in from atop and coming down as he tries to recover. When a DK basically jumps off the stage and into the opponent, what is he most likely doing? Going to back kick the opponent. What does the opponent do knowing the back kick is coming? Given teh range on the back kick, unless you're shulk or a top player that likes to challenge everything, you're most likely going to air dodge. But you don't back kick. You wait for the air dodge (remember, you are flying towards them and they are flying towards you) and then do a wavebounced down B. I do this all the time and have been doing it for months, and it wouldn't surprise me if you haven't seen this even once. Given the veracity of your comment I would bet big money you haven't seen this once. Obviously this doesn't work vs all the cast, especially those with variable recoveries like Diddy and Sheik (sigh), or even against a fellow DK doing aerial up b coming back to the stage, the timing is very strict in order for the hits to connect. But against Luigi their recovery is so predictable that it's basically a free kill to run off stage and aerial down b them (it connects so far below the stage it's hilarious, because it hits below DK), don't even have to deal with wavebouncing or anything.
also, I kill people all the time with down b as I'm making it to stage, I'm so good with my timing that I've gotten pretty much everyone I've faced at least once with it. And it surprises me that me and bonzo are pretty much the only DK's to do it. In the 15 games i faced off with angel cortez a few weeks ago I got him like 4-5 times with it just coming back to the stage. I pretty much think its a mistake for DK's IN THIS GAME to reverse charge punch so that they are facing the opposite direction, I never ever have to worry about making it back to stage unless i'm facing mario's cape, as another thing I also do that other DK's don't do is reverse his aerial up b so I actually travel backwards which they are totally not expecting no matter how many times I do it, and I get back by reversing his up b and getting back to stage at full speed.
the majority opinion on aerial down b is so wrong it's hilarious. Listening to Will on this is also stupid, the guy is wrong about this to the nth degree and you guys just copy him as if he has everything down perfect with DK when he is NOWHERE CLOSE to maximizing DK's abilities. I think vanilla DK the most solid player (strong fundamentals) is Bonzo anyway. I'm the one with all the tech, however.
Also, any dks that say it's a bad move because aerial fair or dair is better tells me that this Dk doesn't know what he's talking about, because there is very few areas where one or the other could be used. Each one has its use depending on positioning, and I use the one depending on my position vis-a-vis theirs. It literally makes me cringe every time I hear this uneducated remark about Dk from supposed Dk mains, so I'm just throwing that out there before you decide to say it yourself. I know bonzo agrees on this point 100%, he and I literally throw out the same move vs each other every time (either fair or down b) we try to spike each other, the person who connects is the one who got it out first. In other words there has never been a time I used one move and he used the other. Which suggests to me that we know what we are doing, and ppl making other remarks don't know wtf they are talking about.