A53 is used for low-power and low-cost applications… It’s a “good enough” CPU that has really good performance/area.

Perfect performance counters for OoO is really hard.

OoO also makes BP more useful. An OoO processor without BP isn’t very useful because there aren’t that many instructions between branches… So, generally, modern OoO processors dedicate far more resources to BP.

There’s no way the in order A53 from 2012 gets even close to the performance of the OoO A78 from 2020.

Like 90% of the under-20 market…