No, I get it, I'm just sure you get my point.
It's harder to score without the ball for sure, but again we have scored goals by not dominating the ball against City (probably where they have had 90% possession in a ten min period also), so it can be done and has been done repeatedly against City this season.
Statistically it's harder to score with less possession, counteracting that however is the statistic which states you are less likely to score the more passes you make.
It only takes one pass to gain a scoring chance, Kanes goal last night is a good example of that, and that was all we needed, unfortunately we had neither the personnel nor tactical nous to really do that!