I think the power corrupted him more than anything else. Throughout the whole fight he was fighting without anything special, then at the end he gets that special something and wants to use that power to crush Ringo. Something she had been doing to him throughout their race up to that point (the hurting part).
5. Ikki had to become engulfed in rage to activate the regalia to even pull it off, or at least thats the way it seems. So I just don't see it as him being able to defeat Ringo as easily as you'd think.
Bullet Tooth Tony: You should never underestimate the predictability of stupidity.
Reporter on Titan Maximum: Sasha is there any connection between your poor album sales and the fact that it sucked?