Yeah it is a majorly warped perspective, look at the size of the thumb.
Still they are big girls, here's a photo and wiki says...
The hornet has a body length of 45 mm (1+3⁄4 in), a wingspan around 75 mm (3 in), and a stinger 6 mm (1⁄4 in) long, which injects a large amount of potent venom.
