I weigh just under 200 lbs. I, too, would like to bench 400 [actually 405 lbs.]. I tried this and failed just before Christmas. But I did get 385 for two reps.
But it just does not look as good as 405.
Well considering that I would have to bench almost 600 lbs to double my body weight, I would have to say that you two are kicking @ss as far as I'm concerned!