Haven't been going to tournaments much recently (should be around the scene till school gets back in) but... everyone who's been in threads with me knows super theory brothers is my favorite game.
Lol, so anyway, a few points.
1. 55-45s are real disadvantages. They're not pretty highly significant, but they definitely have an effect. That's why we have them listed as a disadvantage.
2. DDD, it's been suggested both by quite a few respected players that DDD has a 60-40, not a 55-45 on Marth, including some people who've already posted on this thread. Looking at the match-up, I'm not totally convinced, but I definitely see where they're coming from. At the very least this match-up leans more towards 60-40 then 50-50.
3. MK isn't just any disadvantage, MK is the most common character in tournaments. Period. That makes a disadvantage to him more significant then a disadvantage to any other character. Granted, most of the cast has a disadvantage to him...
4. The composition of our match-ups. Realistically, having tons of small advantages and only one or two disadvantages is a great position for a top character in the game, but it's not a particularly good position for anything below. Generally below that, ability to do well in the metagame will depend on ability against the top char (especially when as omnipresent as MK) and/or number of **** match-ups. Marth unfortunately, does poorly in both categories.
5. We need more good Marth players. Marth is a pretty difficult character, and cosmetically plays similar to MK, who you get more bang for your buck with anyway. This both makes it difficult to get players, and get them to high levels. *Looks at self* I need to get better.
6. As Ankoku said, it IS only one point of data.
That concludes this game of Super Theory Brothers!