^ The "minimal effort" comment was in reference to her Japan stuff. Hence, why the phrase is specifically in the paragraph about Japan. You can't deny that there's a profound difference between her recent TV performances and her concerts'.
I don't follow SM's mega groups, but I remember a post here about how the SM groups were actually singing live around the time of BoA's KML promotions.
I agree she looked amazing for this comeback. Too bad Korea still doesn't accept her as "sexy" and sees her as "trying too hard."