I haven't watched the whole thing yet, but the first "bad translation" I picked up is when they're in the back of the AN-12 he says "we're at 30,000 ft." No you're not. If you were, you would be freezing and passed out. It's safe to say that was supposed to be 3,000 ft. Also, of course they will make bold claims, all weapons manufacturers do that, it's called marketing. I'm just watching it for the cool video of the T-50/Su-57 in flight.
In the original Russian-language video from TV Zvezda that aired in 2018, he says at around 06:20 "our height above sea level is 1000 meters" (высота над уровнем моря тысяч метров), ie just over 3000 feet. The translator inexplicably decides to invent a number an order of magnitude higher...
Edit 2: The T-50 can fly low! lol. It then flies over at around 100 to 150 ft above the ground and the announcer states it flew 15 ft above the ground.
The original Russian narrator/host says at 17:42 "about 5 meters" (около пяти метров), so about 50 feet, certainly not 15. Another nonsensical "translation" that completely changes the number stated. In addition they're actually higher than 50 feet in the accompanying footage, but they could conceivably have dipped that low.
As for the rest, it's just headache inducing. The translation is below all reasonable standards, and it amazes me that this is at least semi-official. The original host/narrator is somewhat annoying as it is, and with this bad and oftentimes entirely misleading translation into English it just gets even worse.
edit: Sorry, my bad, I somehow messed up in my own calculations (meters to feet and vice versa isn't something I instinctively know, being entirely engulfed in metrics) and I mistakenly converted *15* meters to feet, not 5 as the guy originally said. So it turns out that part of the translation was at least accurate, I admit, as 5 meters is about 16½ feet.
And conversely, that it is indeed an (original) exaggeration, at least
vis-a-vis the footage we're seeing. And as noted, it's just skillful piloting to keep a plane in level flight real close to a long, flat runway. It doesn't have all that much to do with the plane itself, and it is irrelevant in most "real life" situations (except perhaps sea skimming, but that's the job of ASMs, not the planes themselves, not since the Falklands).
Ahem: