That's the point, isn't it? Just because engineers are nice to play, doesn't make them overpowered. We have our troubles.
Most people consider Fixers as really weak, right? Wouldn't that just make us 'okay' if we are more powerful then?
Go play an engineer if you want to. Nothing is preventing you to do so. And next time, come with some constructive criticism. After all, engineers speciality, which is supposed to be weapon making, is totally bugged.