How to identify unbalance between LTE cells?

Hi All,
One question in LTE:
I have 2 cells C1,C2 of same band and bandwidth.

C1 have avg 40 GB traffic with prb utilisation 80%
C2 have avg 80 GB traffic with prb utilisation 70%

What needs to be checked to identify this imbalance?

MCS --> RSRP/RSRQ/SINR. Higher PRB with lower data means network is using more resources, repetitions and lower MCS.

I guess C2 has more power defined than C1