Cool vids, good display of skills.
Props to that peach for how well he plays versus marths.
The blue marth that started out in the ditto set had some pretty sweet moves, like a forward-air slid off a platform to an up-air. At the end he got a little foolish with trying to avoid fair with DED, though. The luigi had a rough start, but a nice light-shield edgeguard attempt, then got his approach in better order (mis-placed/timed ftilts before then).
A formidable foe. Little to predictable with his rolls, but you dealt will with his wavedash approach with tilts. He got some lucky misfires too. A little to conservative with your fully charged blast in this fight perhaps. There was at least once when he was lying down near the edge I would've shot it, if nowhere else. You both sacrificed a stock from errors. I'd say your biggest room for improvement in this match-up, if I could be so bold, would be to suggest better edge-guarding techniques, besides just a homing missile. Luigi loves to come back low, and good ones wont get hit by Samus' up-tilt. So, stay on the level, shoot some homings, but when he's coming in low and close, edge-hog so he'll either have to try to tornado stall or up-b high, and punish accordingly.
Luigi is also a great character to use grabs on to either exploit or throw off his ground-game. You did have the one really good grab in there, but that was all I saw.
I couldn't tell much from the sheik fight, due to it's shortness, and I'm sure a longer one would prove me wrong, but you were chasing missile a little too close to his shield, which got you grabbed a fiew times when you were coming in with an aerial. Great up-b at the end, thought you were dead for sure, then I thought you were alive. Mindgamed us all
I have class around noon tomorrow so I'm going to bed, but I'll probably watch this later.