The T400 has five buttons around the trackpad... and Apple accomplishes the same functionality with one trackpad and one button (and no button on the new models).
The T400 has a lit keyboard toggled by a key. The light is actually just an LED pointing down from the lid. I can see the PCB it's attached to. Compare that to Apple's ambient light sensing backlit keys.
There is a key on the T400 to zoom the screen, but it just changes the resolution! Compare that to control+two-finger-drag on the MacBook, which smoothly zooms in on any region of the screen.
The T400 has a physical switch on a corner of the case to turn off the wireless hardware. The MacBook provides it through a menu.
The T400 for some reason still has a plain old full-sized VGA connector with screw posts, compared to mini-DVI.
It's a holistic thing, I guess. A design is either "together" or not. Lenovo doesn't have it.