There is a question about 2305 2450KV motor's thrust

I only know a little about quadcopter motor, and there is a question about my motor's thrust. I bought 4 pcs 2305 2450KV motors from a motor online shop, and I got a thrust data on their motor details, but my fridens said the thrust data probably is wrong, they should at least 1100g/1200g, but he is not sure.So what do you think of this motor thrust data? is this data right or wrong?

Better to ask the question in a Forum that actually talks about motors;

This is a support forum for Arduinos.