Mislead No.1: Rosalind Harker's description.
Sheriff is semi-bald while Rosalind said : "straight short hair'.Also she didn't mention about the mustache that McAlister had back then.(She had sexual relationship with Red John, how she couldn't notice a mustache?)

Mislead No.2: McAllister losing on rock paper scissors.Not something that Red John would do.He really seemed so angry when he was loosing over and over again.Some might say he made a performance.Sure.But remember that Red John is a narcissist, he would never manage to lose even in this childish game.

Mislead No.3: He is beaten up by Risgby, still not a clue that Red John is mad at him.OK that's not a direct mislead but still.

Mislead No.4: Red John managed to manipulate people and he managed to seduce attractive women.(ex. Lorelei Martins).McAllister doesn't seem to have that ability.

Mislead No.5: Red John gives away to Jane the poem that seems to inspire a whole association, powerful enough to cover up major crimes.What was he thinking?If he is indeed a member(or the leader for that matter) then he risked to expose his own work at his arch enemy?Doesn't seem right.He knew Jane would find out eventually.Why he would ever risk to reveal such a thing?My guess, Red John is against the Blake association.

Mislead No.6: Red John loves classical  music (Bach) and he is a tea drinker same as Jane.McAllister doesn't seem to be that kind of guy.

Mislead No.7: In an episode we get to see Red John's hands.From that we got the clue that Red John wears a ring.McAllister never wears a ring in his appearances.

Mislead No.8: The house Lisbon found Partridge was full of pidgeons.However Red John managed to slaughter Partridge and make his mark upon Lisbon, while McAllister loses over a SINGLE pigeon.

Mislead No.9: Season 5 finale, "Until you catch me, or I catch you...".McAllister had the chance to kill Jane at the Wedding in Red-Roof scene and get rid of him.

Mislead No.10: Red John pays a PI to bug CBI (yeah right) and then while trying to kill her, she manages to see his arm tattoo (of course).How?He should wear a tank top or something, doesn't make sense.Still, Red John rarely leaves his victims alive, and only if he runs out of time.He didn't use his classic knife though.It would make his life easier.So what the hell?It seems a kind of mistake that the real Red John as we know him from the 5 first seasons would never do.

Mislead No.11: "He is Mar' That.

Mislead No.12: McAllister never really said that he IS Red John.

Mislead No.13: Red John isn't afraid of death, he can't be.It's like you are a doctor and you are afraid of blood.

Mislead No.14: Red John plays with Patrick, he can kill him anytime, but he prefers to play seek and hide with him.So, why reveal himself?Makes no sense.It's like you decide to finish the game that you are winning.

Mislead No.15: McAlister meets Jane and the only cover he has, is this dumb-ass Oscar Cordero (Sorry.He irks me.He is irksome.) and some random lady with a knife?Sorry but the real Red John in a meeting like this, would absolutely wear a mask or something and in addition he would have at least 3 hidden partners with guns.

Mislead No.16: Even if Red John is a member of the Blake association, he would never agree to mark himself.