This is probably not the place to debate (nor am I attempting to make an argument) but I think it's because Link has much more combo potential, allowing him to kill without having to rely on spacing and gimps (Samus can gimp who, Link, DK, and Falcon?). Plus, Link main weakness (recovery) is consoled by the fact that Samus's isn't too good either and most characters who aren't named Pikachu will usually die to edgeguards regardless.and I don't think that Samus is worse than Link.