i feel like he is acting surprised that his almighty fist can only cause mere surprise to the nanodesu in the arcade game. hence the s-strong!!! or it can jus be like how the other described above
Hawawa, you surprised me!SortieS-Strong!Single strike!Hah, I have been awaiting this moment!Take this! I, the Ken-Oh's...He was there for five hours, but didn't sortie even once. Admiral Ken-Oh simply repeated his 'single strike' until he ran out of GP.