I currently have a Tiger and an FJR, and love them both. Both of mine are older than the ones you are considering so my opinions may not apply directly.
Here are the things I could think of quickly...
The Tiger is much, much smoother over rough roads (or any roads for that matter). The 2010 "roadie" you are looking at has less suspension travel, but still more than most street bikes. Unbelievable cornering clearance. You sit high allowing you to see over most cars and straight through most truck windows. Oiling chain sucks. Dealers few and far between. Needed lots of work to get rid of the buffeting at highway speeds. My std warranty was 2 years vs one for the FJR. Limited aftermarket offerings. Can take it off road if you dare to (still heavy). Looks better all mudded up. Triumph seems to be in neutral territory when you get into the American vs. Japan bike discussions.
The FJR has more power. Better wind protection. It has many more features (powered shield, glovebox, remote adjustable headlights, etc.). Easier to handle at parking lot speeds because I'm not on my tip-toes. More power (can't hurt to mention that again). It does everything very well. Seems more refined than Tiger. Great "value" for what you get. Don't know from personal experience, but I expect the FJR has a much longer life span in terms of miles. Similar gas mileage as Tiger.
I'm on my second Tiger and I always plan to have one or something similiar (R1200GS) as an alternate bike.