Umm, sunsinger doesn't have blink, its actually a much slowwer class than voidwalker. And flameshield takes about 1 second to proc... way more than enough time for a shotty to take you out. Not to mention only noobs get killed by self-res, pros just shotty you before you can finish the insanely long animation that no pro will be suprised by. Titan? You don't even have to be within sight of titan's FoH, it goes through walls and has insanely high reach. And you can't stop any decent titan from using it either, they take around 50% damage WITHOUT the extra-defence during super perk. Not to mention the best grenades in the game...