[i]Because some people wouldn't consider those trash perks in pvp?[/i] One-two punch is a strong perk for someone who plays in a very aggressive, shotgun-based style in PVP. Underdog speeds your reload as your health gets lower, and could potentially save you if you have to reload in the middle of a fight. Field prep increases your ammo reserves (valuable on a special weapon) and buffs reload and handling if you're crouching. Which many players do when they're using a sniper..