Could someone with 6.12.22 (5.1.1) run antutu, I bet its like 50k or so, if I remember correct.
Some beta of miui 8 gave like 75k (best I have seen), but battery ran s**t fast. So rather than to look at bench score I would look at SOT and battery usage. If the new rom gives crapload of battery in normal use but less power in games, I would be pretty darn happy about it. Its old phone, it can still do well, but changing batterylife to making couple k more at benchmark, no thanks.