I like to think about the game as a mixture of CvS2 with MvC2.
The combos system and many other features (air dash, multiple projectile, offensive rewards) is similar to that of MvC2, but the gameplay is more like CvS2 with a faster pace and less turtling. It has features from both games, like double jump, alpha counters and many more things that are in neither of the games
You can still turtle in this game though.
Basically you have to see what type of character suits you the best… It is strongly recommended to choose 2-3 characters (counter characters) as it gives you way many more options.
BTW, most characters have rushdown options… even the big and buff Potemkin has rushdown options… so these descriptions are very general.
Some good characters for starters are:
a) Sol: rush down, high priority, dragon punchmadness
b) KY: Mid range, Fireball madness, Zoning, mix ups.
c) Dizzy: Zoning, throwing, keep away.
d) Axl: Keepaway and mild Rushdown, Poking.
e) Venom: Traps/Locking, cheap damage, Zone keeper. Charge
f) Bridget: Mid/long Range. Rushdown. Traps
g) Potenkim: Throwing. Mid range. Big and buff.
h) Ino: Mix up (low/up game). Rushdown.
i) Slayer: High priority, traps, weird rush in.
BTW, all characters are good enough to be playable in this game…
So you don’t have to go for tiers… though there are a lot of very tough counter character matches
Combos happen all the time… you can combo into grabs and usually from grabs (doesn’t mean it is easy to do), Combos aren’t those 200 hit infinite madness like in MvC2… they are small strings in general, with only 5-10 inputs, and in most cases they are easy to do. Of course there are some combos that can bring input as high as 20-30 (like chip’s or Jam’s) and there are also very damaging 2 hit combos (like forward K into Potenkim buster).