Yeah, I used to follow AKB and thats how most of the girls sound when they sing live. There are only a few that have great singing voices, these six not being one of them. So its a tribute, with their normal singing voices.
The girl in purple dances so intensely, lmao. Especially that hand-waving during Hashire, - she's doing something completely different from everyone else. I mean, I know Reni is the group's Kanden Shoujo, but this is too much! (Also, they got the lyrics wrong in quite a few places, but oh well.)
Not really MomoClo focued, but the girls are there somewhere if you look closely. Not really worth the time IMO, but your mileage may wary. I will recommend the cliffnotes version instead: http://momoclonews.com/archives/41608793.html