Jason is better. First of all, I don´t know why evrybody´s talkin´ about Yngwies sweep technique, it´s pretty basic if you compare to Jason´s stuff. Stuff like Serana is mentaly wicked!

Than Jason isn´t repetative as Yngwie. Especially younger Yngwie had a couple licks wich he seemed to pull of constantly and still today I can have hard time to tell wich solo is wich, they all sound pretty same.

Jason stuff was much more exotic. And he´s faster than Yngwie too. Also Jason could play on slow stuff and speed was not alway´s in his mind. He would usualy leave space for feel but of course speed dominated.

But despite that I find Jason as a better guitarist and musican, Yngwies Far Beyond The Sun and he´s first album beats Jason´s Perpetual Burn. But the thing is that Yngwie is stil stuck in his stuff and I´m sure that Jason if he could stil play today would be the BEST guitarist ever. I mean, guy was only like 17-20 yrs. old when he made all those albums.