What is the diff between Gibbs energy of activation i.e. delta G double dagger and activation energy, i.e. Ea, what is the diff between eyring eqn and arrhenius eqn?

Question

aaronq · Answer

"The Eyring equation, developed by Henry Eyring in 1935, is based on transition state theory and is used to describe the relationship between reaction rate and temperature. It is similar to the Arrhenius equation, which also describes the temperature dependence of reaction rates. However, whereas Arrhenius equation can be applied only to gas-phase kinetics, the Eyring equation is useful in the study of gas, condensed, and mixed-phase reactions that have no relevance to the collision model." http://chemwiki.ucdavis.edu/Core/Physical_Chemistry/Kinetics/Modeling_Reaction_Kinetics/Transition_State_Theory/Eyring_equation

aaronq · Answer

However, I'm not sure if $\sf \Delta G^{\ddagger}=E_a$

caozeyuan · Answer

I believe Ea is when the rxn diagrams's y axis is delta H, of ot os delta G, then then energy is delta G double dagger