The reason the LA has such a mediocre K/D ratio, or at least one of them, is that many people upp them only in desperate situations. Like when the enemy has a vulchvest going on or when your just plain outnumbered. Im also told that many newer sticks fly them but its hard to tell. Nobody with any time in the game admits to flying LAs and Im just not the type to check anyones stats.
I would rate the Hispanos as far better then the Russian cannon. And the Tempest is a far better gun platform. I begin to worry if a Tempest or C-Hog is 600 behind me but dont start worrying about the LA till 400, or even 200. If the Tempest wasnt perked then a lot more people would fly it a lot more recklessly. Most people really dont care if they get shot down in a LA. Ill also bet if most guys had to choose between gunning a Tempest, and gunning an LA, they would go after the LA. There's something about the LA-7 that just brings the meanness out in guys. I have seen an entire furball drop what they are doing and chase me in an LA. Ive never seen a Tempest mix it up with the rest of the pack anyways. Everyone Ive seen flys them like "run-90s" or "runstangs". They barrel in from 15k, HO you, and then run. But its always the LaLas that get the bad rep.

One big reason the LA isn't perked, and it should continue to not be, is that it has very short legs and doesnt have a external fuel option. That means you have to fly it to shorter ranges and for shorter times. That and it doesnt carry meaningful ords, which means its not much of a GV killer. Actually one of the toughest opponent's for an LA is a 109K4, which is what? 20 eny? And the lesser Spits can give you a hard time as well. But.....Im only approaching medium skill in LAs. Ive seen a few guys who can really, really fly them.
The LA-7s are a great ride for the guy who refuses to be a mindless, gelded robot who badmouths them just cause everyone else does. Ill bet I see less LAs in the air then spits and runstangs anyways.