As much as I dislike the 'hero that should be competent being saved by manly man' trope I'm gonna agreeing with @Rabbit here and have to say that Tux and Moon are not the best example. Even though I REALLY hated Tuxedo Mask as a kid so I will gladly throw him under the bus. I didn't hate him because he was 'saving Sailor Moon' (which he hardly was) I just hated him because of how creepy he was because when I was a kid watching the TV dub, I though he was a 24+ year old picking on and then creeping on a 14 year old, and in the manga he is more than willing to take advantage of her when she was unconscious and drunk in one of the chapters, and also brings her back unconscious to his apartment in another.
Tuxedo Mask fake saved her most of the time though, he'd just interrupt the battle tell her "you can do this Sailor Moon" and then leave, and then she would do all the work. (At least in the old series, I have not watched the new Sailor Moon Crystal or completely read the manga. I only read the first series, R and then the last series Stars) Also several times she had to go save him because he would keep getting firggen kidnapped or killed.
As for Sailor Moon herself, she was not competent, so it's not like he was taking that away from her to 'outshine the female hero' she was a terrified 14 year old that despite her situation was trying to be the hero everyone wanted her to be even though she was horrible at it (at least at the beginning, she did grow and become more competent as the series continued) Luna and the other senshi was always telling her want to do or saving her butt because she couldn't do it herself or because she was so too scared to do it herself.
As for shoujo cliches I don't like... I honestly do not read a lot of shoujo, they are just not my thing (Sailor Moon and Card Captor Sakura being my exceptions) but for the few I did read it's more.... too much tropes at once... where it gets too much >< I also don't really like a lot of romance / partner scenarios that commonly show up, but I dislike those when they show up in any series, it's not a problem exclusive to shoujo.
I also REALLY DO NOT UNDERSTAND when the characters introduce themselves and include needless information like their blood type, star sign and birth stone. Even if most of the time it's character narration to the reader, just WHO introduced themselves like that????