May not weigh exactly the same but it certainly isn't twice as big either
The perspective of the two pictures is entirely different, IMO. I can't compare them without a lot more information and would likely need additional referencing material. By my observations, Ardent looks quite tall (6'3"+) and the other chap appears to be shorter (5'9" or less). If my observations are correct, by the pictures, I don't see a significant difference between the cats. However, I have very little experience with lynx or bobcats. Definitely learning some new things in this thread... particularly that I don't want to underestimate them as a potential danger.