read point 3 properly they are pointing out some cards have the disabled attribute on a majority of their arts eg. nicole has disabled on normal, busty and naked & busty and that it would be nice if all cards arts had attributes because even though again nicole is a 3 star card her lack of attributes makes a maxed nicole arguably worse than say a maxed 2 star card with a useful attribute like ball hunter or guardian
not always the case. an example would be rem and yoruichi. both are 1 star. rem has attributes and yoruichi does not but at the same level, rem still has higher total stat increase than yoruichi by 1%. and in the case of the same card with different colors, stats don't change whether it has an attribute or not (same level).