Drack, I suggest you use Marths up smash or Peachs up smash for things like this.
Also here's a tid bit of information: in Super Smash Bros. Melee - Weight was only a small factor for how easily you get killed off the top, Falling Speed is the main factor for that (and the 3rd factor is falling speed acceleration, but falling speed acceleration and weight aren't as big of factors as top speed in falling speed). Weight determined HOW FAR YOU GER KNOCKED HORIZONTALLY, AND HOW LONG YOU WERE STUNNED FROM ATTACKS, (the heavier the less), having only little influence in how easily you get star KOd.
Most likely Brawl is similar, I suggest using Marths Up Smash and Marths F Smash from the center of FD. I have already done a few stat tests of my own, but if you're going to continue this then it's less work for me. If you don't know who I am, I did many stat tests in SSBM (see my sig), but if you're going to do stuff too then I don't have to do as much.
You don't have to do things like this over again since you already made a list, but often it is good to use popular moves to do tests on (especially if they send at exact angles), so not only do you get good comparison for things, but people can use the knowledge to their advantage in rare situations. Double win.
it seems brawl is different than melee in how much weight is a factor. Samus is the best example, as she's a slower faller but super heavy, and she doesn't vary on that scale very much, while in SSBM it varied a lot. My conclusion to this is that the actual weight for characters is more important than before by a little bit compared to SSBM, and falling speed in brawl is less important (for living).
BOWSER IS THE HEAVIEST IN THE GAME, (weight factor is your 2nd list that you made with Mario's down smash), DEDEDE FALLS MUCH FASTER THAN BOWSER, AND SINCE FALLING SPEED IS A BIG FACTOR IN HOW QUICK YOU DIE UPWARDS, HE LIVES LONGER FROM UPWARD ATTACKS I just tested it, Bowser falls much slower than DeDeDe, but weight is the - ONLY - factor in how hard you get hit left/right.
I'm not suprised at this at all, same concept applies to melee to different extremes.
Here's anothing thing, if you continue making stat lists so I don't have to, you can easily test Fast Fall Falling speed by using the Level Editor in the game, and have characters fall from the respawn cloud by pausing the game, holding down on both controllers, then unpausing the game. You can get an easy rankings list this way. Falling speed is slightly harder, as falling speed acceleration is also a factor.
I can help you make really good stat lists if you want, I'm really experienced in this from SSBM, my AIM is ooVideoGameGodoo, I'm online often, just instant message me.