I know western readers usually diss MCs who are weak, or non-manly looking. A weak and wimpy MC isn't a bad thing by itself, but how he affects the story and what he does to or for people around him.
Doraemon's main character, Nobita, is a complete wimp and idiot. But deep down, he's a kind boy with a pure heart, and he can be brave when he's forced to be. Despite him being weak and stupid, he's one of the most popular and beloved manga/anime characters in Asia. Dragon Quest also has a character named Pop, who was a cowardly wimp at the beginning, but eventually became the strongest mage by the end. If a weak MC doesn't do anything useful, he's a bad MC. Simple as that. If a weak MC can progress the story in anyway, he's a good MC. Uhm... I don't care about the virgin part. You folks are too obsessed with sex. Grow up... =.=
I don't read Chinese comics, so I can't tell for sure how those omega brad characters are. But sounds like I won't like them already.
A wimp with a heart of gold is better than a tough guy with no heart.