Stand by is one thing, so you got a ~20% boost.
The problem with reviews is they are static and once updates come out well, the reviewers have moved on to other devices. Meanwhile the impression sticks, like everything on the web, forever.
When something is called bad its usually relative to something else. So whether a device is good or bad depends on how well it performs out of the factory which is what a lot of people will do. The tweaks etc come after. The baseline starts to shift.
