Floyd's ripe for the taking. We know he's never going to fight these three. They would embarass him; GGG would stop him in less than 6.
GGG would but he is a Middleweight, think Mayweather still has enough to beat Khan and Brook. Khan being the harder fight.
GGG probably, Khan highly unlikely, Brook :roflatsch Almighty bum killer Brook, dude with back to back 2 of the worst defenses in last 100 years
GGG kills him, Khan probably unless his chin shatters even against a feather fisted guy, Brook, hard to say too unproven.