For shounen standards its plot is not awful, like the two shows you mentioned, it's very standard, and less interesting than Asura, KoreZon, Ichiban no Ushiro Daimou, even Seikon no Qwaser had more things going on with its story
Art is also average, I don't even want to begin talking about how sub-standard the animation was.
But all this comes from someone who only watch shounen shows because of the ecchi fanservice, and to have a background to read and watch the derivatives (specials, doujinshi, etc). In some cases I got interested enough to begin reading the novels (The Third, KoreZon, Asura), but definitely not here. But definitely not in this case
To put it in another way, the Seitokai and Kendou-bu characters are more interesting for me than the main harem, because the don't have some particularly crappy background exposed in addition to a shit-load amateurishly drawn stills