A Queen QCCC Teardrop I have as a user is a bit gappy and some slight play, also a gouge around the shield inlet. Not good enough on quite an expensive knife, but as it gets used and I have other much better made QCCC Teardrops I don't mind.
I've got a GEC 73 that has some gaps and a roughish spring on open, play too.
One all. They're variable like production knives all are. However, I think the differences lie in the feel or 'aura' of the knives. GEC are generally heavy built knives, small runs, tough springs, often large bolsters, nearly all carbon, many patterns. Queen tends to be more limited in handle choice, lighter pull (but NOT weak) quite conservative patterns, different steels. Their D2 Teardop Linerlock is one of my all time favourite knives, beautifully made(usually!), fine locking mechanism/backspring. Compared to the GEC 73 or 85 Linerlocks in carbon, the Teardop is more svelte, subtle and feels better thought out. That's it, Queen knives tend to be subtle, GEC are never that! When Queen knives are good (and they usually are) you don't want to sell them or trade them, this too could be a difference. Undoubtedly, both companies make knives that are very well worth owning and using.