Arrow - Spoilers galore
I think they show that Laurel isn't nearly as good of a fighter (yet) as Oliver, Sarah, etc. Is she a better fighter and able to take on more than would be realistic in that time span? Definitely. But the show is what it is, the heroes have to be able to fight. I think they do a decent enough job showing that she still has a long way to go before she is as good as Sarah.
And I don't mind the storm trooper-ness of the "ghosts" in regard to gunplay and accuracy. I did find it strange that after an entire episode of capping ghosts with no remorse, Diggle used a tranq dart on Damien Dhark while he was fighting Oliver. Seems like they could have broken up their fight (and letting them both survive) a better way. Maybe I missed an explanation there?