Styrene radical stability?

[miznaz]

Two different radicals can be produced when an initiator radical adds to styrene- a primary radical and a secondary radical.

 

Would the secondary radical be more stable due to something called hyperconjugation?

 

If so, then why do they http://www.meta-synthesis.com/webbook/14_radical/radical.html show it as a primary one?

(scroll to the near bottom of the link above)

[Horza2002]

The secondary one would be more stable because it would be in conjugation with the aryl ring. Also, secondary cations and radicals are more stable than primary in general