I'll tell you how I judge other people's code, and that's by how much I can strip out.
It never ceases to amaze me in anything from a code review – or in larger cases a refactor – that you can routinely remove around 10% - 50% of the codebase because it's either not needed, the problem can be solved more simply, the problem did actually not need solving in the first place, or as in many surprising cases, the code was doing absolutely nothing apart from making it look like they'd done lots of work.