There other unofficial minimums for fitness. This just basically says you're fit enough to be accepted for selection. Assaulter's need to meet a much higher standard and there is huge competition just to get a spot; so the better you are, better your chance. Supporters that have certain skills but meet the minimum, will go ahead of a guy applying for the same spot that has limited skills but is a beast in the gym. And that's just fitness... there's still interviewing, psych eval, etc before you even get a shot at selection.