Fast and portable: Using the MacBook Air in a pro workflow

How about comparing the difference in workflow experience between using a 2013-MacBook Air 13.3″ 1440×900, IPS-screen, aluminium casing, Intel Core i7-4650U, 2x 1.70GHz, 8GB RAM, 512GB SSD, 1700€, 1.35kg
to, say a
Fujitsu Lifebook U904, 14″ 3200×1800, Multi-Touch IGZO-screen, magnesium casing, Intel Core i7-4600U / 2x 2.10GHz, 10GB RAM, 256GB SSD, GB-Lan, 1800€, 1.39kg?

Source Article from http://www.dpreview.com/news/2014/01/14/fast-and-portable-using-the-macbook-air-in-a-pro-workflow