2010 Cannondale Tandem Which Hardtail Is Better, The 2010 TREK 6000 Or 2010 Cannondale F4?

Which hardtail is better, the 2010 TREK 6000 or 2010 Cannondale F4? - 2010 cannondale tandem

I try to advise people to learn the know.

Cannondale F4 Specifications:
http://www3.cannondale.com/bikes/10/cusa/model-0FS4.html

Trek 6000 Specifications:
http://www.trekbikes.com/us/en/bikes/mountain_hardtail/6_series/6000/

Thank you for your help and advice.