Never heard of those guys before, but I did a Google image search. Fair point.
But you've got to admit, they're the exception to the rule. Either their looks don't reflect their physical abilities, or they may be good at what they do, but not in great condition.

Take a look at any weightlifter (except in the +105kg category), any male or female athlete involved in running sprints, skating sprints, swimming sprints or cycling sprints (these being closer to functional martial arts training than the less attractive endurance athletes ), gymnasts, ballet dancers, acrobats etc. etc.

Basically, what is an attractive physique? Low body fat and evenly developed, symmetrical, toned muscles. The same as what's functional.
The world's a will to power and nothing besides