When viewed from the advantage, indeed Man City will lead the match, but Tottenham will not be easily conquered just because their current form is not ideal. The potential that Tottenham really wants to achieve is a draw, while Manchester City itself will target a big score to keep going in order to collect more points. I think even if Manchester City can be kept goalless, they will be safe.
You're right, I totally agree with your opinion, even though Manchester City will excel on the pitch, it doesn't mean this game is an easy game for them. If we look at the history of the match, in their last meeting, Manchester City lost with a score of 1 - 0 scored by Son, even before this meeting, Manchester could only win with a score of 1 - 0 in the EFL cup. With these data, it looks like the match will be exciting later.