Uh...
I have a Samus main friend who I played with during the school year, but it was weird. She crouch cancels a lot, so she is open for down smashing, but things you try might also get CC'd. Powershielding her missiles is fun and easy, but I don't think our aerials break through them. From what I remember, it's a long 6 minutes of camping/trying to approach.
Edgeguarding Samus? I usually just went for killing her off the sides. It's probably safer to toss turnips out there, and you could probably get her with some bairs, but she doesn't die easily, that's for sure. Her recovery is pretty good, too, and if they feel like changing it up (or if you catch on to them) I don't think Samus's have to bomb jump forever if they don't want to.
I don't know if that's good MU stuff, but that's stuff I remember from fighting her.
EDIT:
Vanz says:
12. vs Samus - 65:35
VaNz Percentage - 80:20
People who play the match up best: .. No one plays Samus
Pros
- Samus is REALLY bad. It surprises me that she hasn't dipped into low tier
- Bairs Shut her down completely.
- No Need to camp.
- CC / OoS punish almost everything.
- Samus' roll CAN be chased by Peach.
- Turnips. Samus can't do much about them
- Uair will kill faster then other aerials on most Neutrals
Cons
- Up+B Oos is pretty annoying
- Surprise Extender grabs are annoying
- Peach can't really combo Samus.. shame on any samus that gets OD combo'd by peach.
- Samus can Dsmash peach at like 50% and get a full charge shot before Peach can punish. annoying.
I hate Samus. She's just boring. It takes for ever to kill her, She can't be combo'd, and most of them camp. Thank god the match up is so heavily stacked in our favor. Spaced Bairs work nicely and If done correctly, Samus' Up+B OoS will miss. Use Bair/Nair to get through missle spam. Spaced Fairs are nice too. In fact, spaced aerials are pretty much the way to go. Keep in mind that Samus players tend to crouch cancel EVERYTHING, so Fairs and grabs are most important early on.
Stages we like: Final Destination, Battlefield, Jungle Japes, Yoshi's Story
Stages they like: Dreamland, Pokemon Stadium, Corneria