Dangerous dave your common on "no one we've played has a brain" i cannot agree more.
I have put hours into practice mode figuring out whats good and what is not, what combos i should use, all my low and over head mixups, mixing things up when i do get close, Timing my weapons so i use them more efficiently, comboing into my super.. I see brain dead people who do not know their combos and do not have any patience. they do not know all the tools that the character has to offer and don't utilize them.
I have people who get frustrated with me and pick deathstroke as well*mirror match* And you know what. i destroy them completely.
I give them no hate. i just tell them what im telling you now. Put time into your character and develop your skills. more than half of the time its scrubby people who don't know their character that complain the most.