I'm afraid you are a scrub at MVC2 just by your character choices. You can't afford to play non-Sentinel, Magneto, Cable, Storm characters and non-Psylocke non-Captain Commando non-Cyclops for assist. That's if you want to stand a chance of course.
However, you're not cheap, because cheap does not exist.
There are sistuations your opponent knows how do deal with, and those he don't.
If your opponent can't deal with a situation, I urge you to overuse that weakness and exploit it any way you can. In this case, your opponent is the scrub and you should punish him or her until the counter-situation is learned. Then, after your opponent has learned how to deal with the situation, he should thank you because you have made him better.
Arguably, grabbing could be considered cheap in SF2 back when tech grab did not exist. But even then, it was up to you, knowing that grabs were not tech-able to adjust your footsy and not approach your opponent unless you had a solid mind game ready.
"Cheap" is what scrubs say when they're overwhelmed by a far superior player. I always take it as a compliment.