Perfect road bike?

my friend's little sister (13 yrs old) wants to buy a road bike...but has trouble deciding between the Giant ocr3 for $649.99 http://www.giant-bicycle.com/en-US/bikes/women/1247/29272/ or the Trek 7.2 FX for $419.99 http://cycleworksinc.com/itemdetails.cfm?id=7095 ( The employee says that the... show more my friend's little sister (13 yrs old) wants to buy a road bike...but has trouble deciding between the

Giant ocr3 for $649.99
http://www.giant-bicycle.com/en-US/bikes/women/1247/29272/

or the

Trek 7.2 FX for $419.99
http://cycleworksinc.com/itemdetails.cfm?id=7095

( The employee says that the bikes will go down 80 dollars during Jan. and Feb. The price listed above is the current price right now, so the giant bike is going to be $580 and trek will be $340)

when she gets the bike, she will update the bike parts

but the problem is she doesn't ride during the winter only in the summer, she rides about 25-40 miles per week (mostly by herself) .the employee says that if she rides the giant ocr road bike and goes over a bump or curb, then the tire will be messed up. but if she rides the trek than it absorbs more pressure and can take more of a beating to it.and she both rides sometimes on the road and sometimes on the sidewalk .so she was just wondering what are some of your opinions
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