Difference between MIUI.us and MIUIAndroid

[peters.]

Hi, i'm using HTC Desire S and tried both ROMs. On MIUI.us, i have 10-12mA battery drain in standby mode, while on MIUIAndroid US / Czech 20mA. Applications running in background and other settings were the same and i tried that on 1.11.25 and 1.12.2...
Are there any differences between these two ROMs for DesireS. Is it just translations? Is there different current measurment?

Thanks,
Peter