I think, Real Madrid has potential players that know how to score goals very well than Manchester city because Benzema has demonstrated well in last season by achieving many goals from last season that made them to achieved some titles last season. This season, Real Madrid are still in good position to win this UEFA champions league title, because their strikers and midfielders are very ready to work together through out this season to ensure they embrace this season title. I don't think, Haaland can help Manchester city to achieve many goals in this season, because many other teams defenders has discovered his tactics which will be difficult for Haaland to score goals like the way he started from the beginning of this season.
Right now Karim Benzema is injured with a muscle injury, I think he will be effective to play on Sept 29, so he would likely play against Shakhtar Donetsk, on October 6, but if he would likely give a 100% performance, Benzema will surely well-known to be a goal machine for Real Madrid but can he make a 100% performance on that game since he comes from an injury, and Shakhtar Donetsk is not a push over aswell, while even though Halland's tactics had been discovered by other teams defenders I think Manchester City would likely have some other option in gaining them points not just Through Erling Halland,
Here you have nothing new because we all know prediction is not easy in early matches and every time we have three teams as hot favorite for title in Champions League and these are Manchester City, PSG and Bayern Munich and currently two teams are having strong chance for winning and these are Manchester City and PSG because both are having very settled player and quality attack which can thrash any teams defense so with this most chances this year deadlock is going to end for these two, and we are going to have new Champions but still nothing is clear as any team can do upset, and we will have some change things in coming days.
Haaland is surely just one man show for Manchester City which is currently doing one of the best performance and no one can stop him with PSG having Mbappé and Neymar with veteran Messi is also in good shape which mean these two are best in this business.
Even though I like Erling Halland on Manchester City, PSG, and Bayern Munich I will likely include Real Madrid as my favorite to win aswell, you will never know when Karim Benzema will likely drop those bombs, and now that he will return from an injury there could be a chance that Real Madrid will have a solid chance, but for now, Karim Benzema is not in his 100% for sure, so likely their opponent Shakhtar Donetsk, may have a chance but I doubt because they still have Vinicius Junior, Federico Valverde, and Rodrygo, on the team that will likely have their play against Shakhtar Donetsk,