It's nothing to do with that - Kenpachi with his eyepatch on is (supposedly) marginally weaker than Ichigo in shikai - if Ichigo with his Vizard mask on bankai can barely scratch a guy with his 'ultimate' attack, why the hell can Kenpachi cut his leg off? Effortlessly, I may add.
Also, Kenpachi pwned Tousen, and was fighting on the same level of Komamura's bankai with his eyepatch on, therefore /shrug.
I'll leave your beliefs in peace, but you WILL find yourself in a minority on here
