First off, Sami does arguably fight by herself in the sense that COs are real characters in Portrait of Ruin. I realize Sami isn't inherently in that game, but it isn't completely foreign to the franchise. Second off, you might argue that the armies being the size of her ankles isn't 1:1, but a lot of smash is referential without being 1:1 from the games. Fore Example, no fire emblem game has the main characters actually "counter", but counter hitting is a major part of that game. In a way, the Fire emblem down B is a callback to the game, in the ability to guard an attack and then respond with your own attack.
Well, Portrait of Ruin is a Castlevania game that has nothing to do with Advance Wars... so I have no idea what you're talking about. Unless you meant Days of Ruin, in which case I still don't know what you're talking about. I haven't played that one, but as I understand it the gameplay is still the same, and the COs do not appear on the battlefield. And the COs were "real characters" in the previous games as well, filling the same role: commanding their soldiers. When I say that Sami didn't do any fighting herself, I mean just that: at no point did she pick up a rifle, step onto the battlefield, and start firing at a group of infantry (which I imagine ought to be the same size as her).
The FE counter thing is a bad example. It's the same ability in Smash as it is in FE, even if you aren't triggering it. Being able to counter, do sword slashes, critical attcks, etc. are just examples of translating his combat style from a turn-based, limited interface to that of an action game.
Either way, it becomes immediately obvious that COs spawning troops in this game would be a closer reference to the real game than Sami using grenades or landmines.
Cfalcon and the starfox characters maybe aren't a good example because it is literally unfeasible to have a massive vehicle in the game as anything but a final smash.
Not really. She doesn't do either of those things in her game. On the other hand, no one's saying that she'll use grenades or landmines. Being a clone of Snake doesn't mean she'll have his exact moveset.
I don't understand how my examples were bad examples. Is it just because you don't like them? This is the
exact same situation we're dealing with in Sami's case. How about this: "Sami maybe isn't a good example because it is literally unfeasible to have a massive army in the game as anything but a final smash."
Anyways, in all three cases, we are creating a completely new moveset for a character that fits them, because what they do in their original games is absolutely incompatible with Smash gameplay.