I see about a 5 foot radius. it's pretty easy to see. you do understand there are 3.28' in one meter?I had a look at it. It actually is about a 5 meter radius.
Anyway, the healing circle of Trimimac's Valor is just as the description says. The same gripe about radius size could be made for any skill in the game. Your issue is with distances in the game in general.