Different philosophies and approach to guitar by all three.. What if it was Nuno, Slash, Vai, and BB King was on stage? Nuno is a melodic shred master. One of my favorites. But I can't size them up with each other. Their all amazing musicians. I'm sure Tremonti learned a few Extreme licks back in that era, as did Myles in their playing development. That had to be such a huge honor for both and Nuno contained the beast...respect..