It's because the precision is overstated in the conversion to imperial. If they're going to convert units they could at least give the correct significant digits. It should have read (if one insists on not just leaving it in metric):
- Operational altitude: nearly 1 mile (1.5km)
- Weight: Under 1 ton (imperial or metric. Take your pick, it hardly matter.)
That's fucking amazing. I love it. I want games like that for real now (they say, knowing full well that historically games made from movie and TV IP have been largely awful, alas):