Yes it may be entirely correct that there are no major obstacles for India in this year's Champions Trophy. However here we have to consider the pitches of both countries because New Zealand played the semi-final in Pakistan. So according to our observation, the way the New Zealand cricket team scored runs against South Africa on the field in Pakistan, they may not be able to score runs like that on the Dubai field. Moreover the Virat Kohli you mentioned could only score 11 runs in a previous match against the New Zealand cricket team, I'm guessing a bit maybe he won't be able to score more than that in the final match. 
Virat Kohli would be a key Indian player for the final match. He was the one who made 84 in the semi final match against Australia and also he made a 100 runs in a match too in this tournament. I think if he doesn't score, it would have to be Shubman Gill or Rohit Sharma who needs to make a big 100 in this match. If one of the top three batsmen couldn't bat long, it will be very difficult for the Indian team to survive in this match.