@GoggledAnon I thought the same too, but that is still very non-colloquial in (at least American) English.
If you want to get into the actual Japanese... I would think まぁ is closer defined as "wellll" in this context and どっちのちいちゃんも is "which(ever) chiichan".
@Ninjaman20, Please continue this series, I'd like freshes my rotten eyes from other dumbs manga
Here my suggestion : Please take a Trusted proofreader and QC to correct a minor details.