Shadow, most of us are ex-Melee players. In fact, most of the people that are good at Brawl ARE ex-Melee players because they have insight into how high level play works and often times use strategies normal players wouldn't think of based on their insight. You know all the advice I gave you against Light? That was all based off of Melee experience and all of the elements of competitive play in both Melee, Brawl, and in most competitive fighting games.
As for Short Hopping, you seem to have some misconception about it. Short Hopping is a universal skill that is unchanged between Melee and Brawl (aside from the fact that you have MORE time to do it in Brawl). Why do you think so many people can SH without any trouble and you've been struggling the past few days? Most of us learned it a long time ago by the Fox method we've suggested, which is why we RARELY screw it up, regardless of what button we push afterwards. Short Hops are not something character specific, at all. The only thing specific to a character is how many frames they stay on the ground before jumping, and the fewer frames you have to work with, the faster you need to release the jump button. Since Fox/Sheik/Samus have something like a 2-3 frame jump in Melee, theirs is INCREDIBLY difficult to pull off in comparison to any other character, and the next closest SH is like 4-5 frames. Those frames start the instant you push the jump button, so having a 2-3 frame jump means you have 1/30-1/20 of a second to release the button, whereas the 4-5 frame jumps have 1/15-1/12 of a second to release the button (are you seeing the picture?). Practicing SHs on a different character doesn't make you worse at SHing with your main, it makes it so you'll be able to get the SH consistently since you're used to dealing with a much stricter window to SH. It's sort of like having to run a mile in 5 minutes every day, and all of a sudden the requirement is lessened to running it in 10 minutes, it'll be a piece of cake because you've been running it twice as fast under the old requirements (you could jog and still make it in the time without breaking a sweat). Does this make sense?
I don't know what your problem with Melee is, but we've been trying to tell you (with a lot of experience in both Brawl's and Melee's engines) that if you can SH in Melee with Fox consistently, you can SH with ANYONE in Melee AND Brawl. I've been trying to tell you it just takes practice, and that practice is finally showing its results for you, but you seemed interested in mastering it faster than the rate you had been, and the fastest way (AND most effective) is practicing with Fox/Sheik/Samus in Melee (not to mention Zamus's jump and SH are identical in height Sheik's and Samus's). You don't have to use the method, no one is forcing you to. Just don't get angry at us when we're actually giving you good advice and you just don't want to use the method.