You do realize the rank doesn't matter... Knowing combos with everyone doesn't either. I would rather have solid fundamental play then know combos for everybody...
I have that aswell, and rank does matters, if a player can't get past or to C or B.... You must not be that great, you think you don't have to try , your defense aganist alot of styles must be pretty bad, you probably might not even know whats safe or not for your main character and the usual reason is that you don't want to practice but you complain like you know what your doing.... thats when you desreve that low rank your stuck with or that 20% win ratio.
I have lost to some legit B ranks, and to a couple of C ranks but come tofind out their actaully A1's and 2's. If your reffering to the guys who have 2 to 3 thousands of games won, but just never go to ranked. They have the same experince as an A ranked.... so yeah basically their the same thing as an A rank that just doesn't display it.
Combo Strings are useful in any fighting game, not saying its what makes or breaks a player, but it makes for good
Guaranteed Damaged once a launcher, stun, counter, wall splat, or ground bounce happens. That is also what most of the brave edges are used for in the game anyway. Like Rapheals simple 3B (counter hit) , B, B, B BE thats like 10 12 hits, like pat 236 B BE, and how it leaves them sliding state, combos also make the game more entertaining to watch as well.
The only characters that can play can with-out combos really (Yet they still have combo strings on the larger side) are Mitsurugi, Siegfried, Nightmare, Astaroth(If just a few of his base hits connect, you will die quickly, and yeah he has dozens of grab combos, and follow ups with almost every sitaution, but is still slow and high risk) and Aeon.
The best part about knowing those so many characters, it becomes harder for people to mix you up, because you know most of what they do, if you fight with that character. The main factor of playing this and any other fighting game, is that it's based on the player, if you can wacth your oppenet well enough and can know your charcter and their character enough you can win with no combos(Basic and Juggles) and just punish, just guard, and back grab them to death. I basically stated previously how i play.