They're not "muscle hunks", but half of the people in this picture are definitely much above average in muscle mass.

There are no opinions/personal experience necessary here. Research has quite clearly shown that a decent amount of muscle, more than average, but not by a lot, not an outrageous "muscle hunk" amount, is the most attractive sexually.

Of course this doesn't hold true for all women, tastes differ. And as well, muscle is not the most important thing in male attractiveness. Male attractiveness is a mix of very many things.