Sorry for the slight thread Necromancy, but I just realised the OP is talking about the 13" MacBook Pro.
In this case, I would definitely recommend the MacBook Pro. The unibody construction makes it much more durable than the black plastic of the Lenovos. Additionally, you can protect against dusty and muggy environments with port protectors for the MacBook Pro, available from a variety of vendors. The frequent changes to the Lenovo port layout and relative popularity mean there are fewer of these protection options available to Lenovos.
Combine this superior durability with the better warranty options I mentioned before and I believe the choice is easy.
Do you have any evidence, anecdotal or otherwise, to support this? Say what you will about about Lenovo's drab looks and dull screens, but they are VERY solid, with magnesium alloy casing, a magnesium "roll cage" frame, steel hinges, matte finish, etc.
In contrast, aluminum is a soft metal that scratches easily. A dropped MBP is much more likely to dent or get bent out of shape than a Lenovo. Surviving an impact depends on a structure's ability to absorb shock, either through an impact zone like a car "crumple zone" or by flexing and "bouncing" back (polycarbonates, carbon fibers, titanium/magnesium).
So while a crumpled car may be great for passenger safety, a smashed up, dented MBP isn't great for the looks or value of your laptop.
For the user's needs, go with the Lenovo X200. Tougher, lighter, better heat management.