I wanna say one thing: ( okay, a bunch of stuff )
First of all, your so called theory that as long as the stages are somewhat randomized and that out of 15 stages, A MK vs a snake, there would be a couple in advantage of one character, a couple in advantage of the other, and some that gave no advantage to either. You said that if you played one match in all 15 stages, then that because of this there would be no effect on the overall outcome ( which you based of the standard matcup ) Now, there's so many things wrong with that statement that it's funny. what you say is true, but we don't play 15 times in a row in a tourny set. Nor are we forced to do battle on all of the legal stages. WE fight on the stages that we counterpick. Which means, that, usually, A MK player will counterpick a stage that beefits him over snake. With that in mind, instead of playing on 15 stages, you'd play on 3 or 4. They don't play on the stages in a set order. They do something called counterpicking. Than, since counterpicking diffrent stages screws up[ the matchup for each character, you'd have to consider all possible/legal stages and there effect on all matchups if you wanted to include everything numerical into the list. After all, this entire list that your making is completely based of matchups, so you'd have to include every variable. There goes 20 times however many matchups there are ( which is if your playing as MK there are roughly 20 times 35 possible outcomes for matchups. MK vs snake would have twenty diffrent ratios. And you'd have to include ALL variables to make it fully scientific and numerically fair. not to mention that some of these stages won't get played on for that ONE matchup. Have fun doiung all THAT math. ) Plus there's no way in heck that SWF would suspend the counterpicking rule and make the set of stages randomized. Even then, there'd still be all of those variables.
Second, this whole tier list is based ALL on matchups. Even if the matchups are based on the current top players metagame, every time the metagame changed ( like if a new AT is discovored ) even for only one matchup, it would shift around your whole list. Not to mention you'd have to factor that in to all of the possibl/legal stages. You'd be up all night. And that's for on out of 35 times 35 mathcups. That's 20times 35 times 35 in total, and if the metagame shifts largely than ALL of the matchups are considered outdated and must be redone. And for popular characters, you'd have to definitely change their matchup if a new groundbreaking ( or even moderately awesome ) AT came in because of the maounts of time that it would be used in the matchup. That would take a ton of time.
Third, don't you think that movesets and things other than matchup data should be considered? For example, if you want to take all things related to numbers that could help make a tier list, than you'd have to put in moveset data. For example, add up how much total priority a character has per move on average, or how much recovery a character has, or how laggy or strong or comboable ( yes, even for brawl, couple comboes that it has ) their moves are on average? Don't you think those things should be considered? I mean, those are the things which create the outcome of the matchups, but things other than just matchups alone should be considered. Of course, on a tier list, some sort of opinion should be included as long as it's legit and to level, but if you want to make it all numerical, that's fine with me. With every matchup varible that there is, if you want to make it credible/obsolete, have fun crunching all those numbers.
And if you say that you don't have to include poula conterpicks or counterpicking or stages into matchup/tier list evaluation, ask any top player: stages and counterpicking constitte a large part of the matchup. Like spadefox said, FD heavily increases all of diddy's matchups in his favor. ( Well, most of them, you get my point. ) I just think that it's stupid to make a only numerical and only matchup related tier list with no oinion what so ever, people play smash, not robots. There are somethings that will need human opinion on. And not including counterpicking or stages into matchup evaluation is just stupid.
So, yeah, that's my output on this and stuff. Yeah, hmm... Stuff.
So, who agrees with me?