If the fast spam shots didn't do ~100-150 dmg it really wouldn't be an issue. As it is though even an unskilled player can completely destroy any alien class except a decent tyrant. Give the spammer a bit of backup (you know, since humans are supposed to use teamwork) and fast spamming lucy makes an attacking human force practically invincible and guaranteed to not only make their money back, but to make the aliens lose a ton of evo points as well.
Add that to it's defense capability, constant spamming on the entrances and hallways into the human base and it gets pretty retarded. Even a tyrant will not be able to enter a human base being lucy spammed without getting cut down in a few short seconds.
I think the biggest problem though is the way humans choose to play most of the time. Heavy camping of their base with some lone rambo's going out now and then. This makes them think things are unbalanced because that tyrant always rapes them, even though if they had 1-2 other people backing them up it would most likely be the opposite result.
To cut short any more words, a semi decent, agressive human team can rape the shit out of any aliens even without fast luci, add that into the mix and it makes them pretty much invincible.
Luckily for aliens though, a competent human team is rare, but as mentioned here before, things should not be balanced for the lowest common denominator and weapons shouldn't be designed to compensate for a complete lack of human skill and aim.
