the handsome guys get the girl's attention in the first place...
A woman wants to look up to a man, both literally and
figuratively.
so, first look handsome guys win liao lo since average guys
gotta work somewhat harder to stand out in a crowd.
but ultimately, average guys might win in dating, not saying
handsome guys won't, but at the end of the day you gotta see who
has more "character", then again, physical attraction might spark a
start of a relationship but i think it definitely isn't enough to
sustain one at all.
Agree,
We are all taught to look first spot what is beautiful
and pleasing to our eyes. It's natural.
Our taste in beauty differs within individuals,
that is why the term good looking also varies due to different
perception and preferences.
We all prefer to date someone who has more substance and how
he/she looks only isn't it so? The crunch of this issue is -
when 'cosmetic' of one is removed.
What is left behind. 
Cheers