first of all, "mamacita" was a masterpiece and i'm willing to bet you didn't listen to a single song outside of perhaps the title track, because it's p. agreed upon in the SJ fandom that that album is on par with "sorry sorry," which is almost universally considered their best album to date.
second of all, music is subjective. i like super junior's music better than EXO's. you like EXO's music better than super junior's. why do you think that your opinion is more relevant than mine?
third of all, super junior became mammoths internationally because their music was heard by people who were non-fans and loved it. so i'm not sure what you're trying to get at with that last point.
also as for best overall discography in SM, yeah, sorry, that title goes to SHINe