The wiki lists them both as 0.625 base AS and 20% windup on Asol, 19% windup in Malzahar.

After playing around 10+ games of Asol last night, why does the Asol animation windup seem way faster (also his AA missile speed is nuts). I would even say that ASol has one of the fastest feeling AA animations in the entire game taking double adaptive force runes (to me his AA’s feel better than even ADC’s at level 1 where I take the AS rune), but on the wiki he has just “average” stats.