Joker does not used face make up, That was scared, I take the Joker hands down. His Will to win would out last the GB.
Joker has MORE than just the laughing gas(Which kills by the way).
Razor sharp playing cards, Ablity to control or work eletrions, Bombs, and traps.
And of couse his hechmen and Harley Quin. Were the Joker lacks in might, he make up with numbers, and a plan to take down the GB.