Marvel and marvel vs games are truly their own beast. A marvel vs game typically includes, tags, assist, air combo, high low mix ups and at least 1 character with a 8 way movement/non universal movement opinions plus everything you mentioned. The games are typically light on universal mechanics outside of like a push block and some over the top usage for meter.
Anime games do include a lot of what you mentioned but typically aren't tag, and most of the cast have the same options as everyone else. Box dashing, spot dodge, some universal core mechanic.
1)
You kinda just proved my point though.
The vs game while similar the differences make them play completely different.
If I'm just playing an anime game.
Everyone has a box air dash
Typically no tag or assist feature.
Launching characters for air combos is typically "dramatic" and controlled
There is typically a roll or spot dodge
There is typically a plenty for not playing aggressively.
Vs games
Movement options are super varied, 8 way, wave dashing, air dashing, no dash, teleport or giant size character.
Typically there are tags or assist or both.
Launching a character is going to be a standard form of damage with the damage and combo restrictions following the same general rules as the rest of the game.
Push blocking is present
Chip damage, lock down, zoning, and lame play are encouraged.