Well I couldn't blame 5dolls for their response like that
I mean they are new and just debut with their 5 girls formation like that, so they must want to show theri skills and performance to the people so they can be known
If there are T-ara's members on their stage, and we all know that T-ara is more popular and well-known, they can easily overshadowed by T-ara's members
And I have to admit, I am looking into Jiyeon more than to 5dolls's members, so sorry
But I think this is a good start, I hope they can learn to accept that feeling thus creating a stronger family bond