[virgilp]

> what does that mean? Can it be reduced to a vector of scalar values?

No, it certainly doesn't mean that "your performance was [7.23541 8.1241 34.412515 .52632 995.154]". It means "you did good/ you did very good/ you need improvement", with some details like "<these things> you really handled well and I appreciate it; maybe you can work a bit on <this area> though". I definitely agree one shouldn't stack-rank people - especially in a good team (it's entirely possible, desirable even, that everybody did a great job)