the whole tier system on cvs2 is too complicated to actually rank characters accurately. but there are characters that do have a definite tier, i.e. blanka, sagat, etc. the thing about cvs2 is that is gives the player so many options, that certain characters in certain grooves will have a different rank than if used in other grooves. also, now that rc’ing is being used more and more, there is no definite use for a tier system, since anyone can be top tier with an rc move.
anyway, i like to use the “low tier” characters. like king, yuri, dhalsim, ryo, and chang. i am really starting to put together really good teams using these people, since most people have trouble against them since no one uses them much, thus, they have no experience against them. actually, i wouldnt call them low tier, since the way i play them, they are actually mid tier. i would just call them, unpopular. well, unpopular where i play, i dont know about where you play so dont get all crazy if its the opposite for you.