So first it was 30-40 in 6 minutes, then 20-40 in 10, now it's 40 in 5-10.
Make up your mind
I just had a Luchs, and sadly MM gave me a newbie bash. And in rougly 5,5 minutes of base sieging it obtained 29 kills. I've had more before, it's possible, but that's the deal of a light AI vehicle - it can also backfire quickly if the enemy counters it properly.
As Heartless already mentioned the T70 can be also a serious threat, and let's not forget about Recon mode. And by the time the Luchs hits the field, you already will have gathered approx 200 fuel. Even if you exclude some upgrade fuel, it's pretty easy to yield a medium tank at the same time, which will wreck the cute little AI cat rather quickly.
Would be nice to have some super slight HP buff for the T70, so it doesn't die to two PAK40 shots, but that's it pretty much (in my opinion).
Edit & P.S.: if a Luchs wipes your Captain or Zook squad before they can shoot, then you're doing something wrong.
You know, it's just average. Sometimes you can get 20kills in 10mins and sometimes 30 in 6mins.
What's more, Luchs will always hit the field faster than medium tanks, especially if you go for t2 and convert muni to fuel.
Luchs is so fast and mobile so if you see Captain behind green cover you just go around and wipe. No need to face Captin with cover buff.
Focusig on Luchs will let you open for Obers or Falsch while OKW will always go for Schrecks so it does not matter if USF/SU will go for Stuart/T70.
Point is, OKW can counter T70 or Stuart without any problems. Even OST has Pak and fausts to counter light tanks. Soviets can rely on AT nades and ZiS but USF? At nades with minimun range and without homing ability are useless vs Luchs.
Bazookas? You need 5 hits to kill Luchs with it.
Sherman? Even if rushed, it hits the field around 12min.
US Forces are fucked by Luchs most of the time.
Soviets have better option but keep in mind that Falsch or Obers will wipe Cons and ZiS while dealing with Luchs.