My honest opinion on this Bayern Munich's championship chance topic is that they wouldn't have played exactly the same if they didn't sign Kane. I can see that Tuchel's system is working really well. He needed time to apply his plans for the team and he took advantage of the summer really good.
However we just can't overlook Kane's contribution level to the team right now. Despite playing in the same country and even for the same team for so many years he didn't have any problem with adaptation.
His contribution with goals and assists is incredible now and he has a big role in these very strong victories so far.

Kane contribution is what Bayern Munich has lacked after selling Lewandoski to Barcelona; A PROLIFIC GOALSCORER. The extra perks to this is that Harry Kane is more than just a Goalscorer, he is also an Elite creator and thats why either Tuchel uses a 4-3-3 with kane up top or a 4-4-2 with kane + chupo Motip; Harry kane flourishes.
He is such an excellent talisman