OT: i'll explain about my site. i am sorry that i can't pleas all you guys and have EVERYTHING updated and there are a lot of things i ignore because i think putting in stuff like "is haku a girl?" is stupid. also, it's not even for the anime readers in the first place. it was specifically for the manga readers, but i fixed it up so anime newbs won't be spoiled. anyway, i don't spend my whole time working on it each day and it probably won't be updated (big updates) for several weeks since i have finals coming up soon.
ok, back on topic. how do you not understand that itachi's sharingan is better than kakashi's? (NOTE: everytime i say itachi's sharingan is better, i'm ignoring mangekyou sharingan) kakashi's sharingan cannot be used to it's full potential and that is ignoring mangekyou sharingan. since kakashi isn't a full blooded uchiha, he cannot use it as long and as accurately as itachi can. that alone should just tell you that kakashi can't use it to read and copy jutsus as well as itachi can. did you not notice how kakashi admited that his sharingan was barely keeping up with itachi while itachi had no problem? also, remember that kakashi said that he can't use the sharingan perfectly and this was before even the idea of mangekyou sharingan was introduced. yes, reading and copying jutsus have no relevance to what we're talking about right now, but it's a solid evidence to explain that itachi's sharingan is more advanced.
and stop bringing this up: 'gai can beat kakashi with his method.' if gai can beat him with such method, why are they considered eternal rivals? what is the point of being eternal rivals when it's so one sided? and why don't you prove that it works on itachi as well? can you? no. all you're doing it trying to apply a method to a higher degree of a situation to support your theory. it's actually a huge jump from applying it to kakashi's and then applying to itachi's considering kakashi isn't even an uchiha.
sorry to break it to you but, your theory is not 100% sound. and if you're gonna post "whatever, muppet" don't bother posting at all. that's spamming.
EDIT: and let's think about this. what if eye contact isn't even needed for mangekyou sharingan? what if the eyes just have to be opened? maybe that's why kakashi told asuma and kurenai to close them instead of just saying 'don't look at itachi's eyes.' isn't the latter a safer option than having both of your eyes closed rendering you basically completely useless? i think this is the main reason why you need to be a uchiha to defeat another uchiha. since genjutsu effects your five senses (sight, touch, taste, smell and sound), you could be looking down and itachi could turn the world into something crazy by altering your senses. that's what tsukuyomi does. it made kakashi feel like it was three days long (or however long it was) and kakashi felt the actual pain.