Luffy tards pick ur poison :
1/ Luffy is only looking embrassed because he didn't use adv CoC even if he used Gear 5th which means :
KoH > Adv CoC > Joyboy's awakening
2/ Joyboy's awakening is greater than Adv CoC which means Luffy used his all power and if gets embrassed you need to adknowledge Admirals strength .
@nik87