Its not that Hans is better than Frankie. Its that Hans has a wider tool set. Back in wave one he was pretty much your only real option to deal with stuff like Pandora's Sorrow spam and Huggy in guild crews other than Sonnia and incorporeal in general. He also forces your opponents to play conservatively with stuff like necropunks, vultures and baby nephilem as scheme runners because he can shoot them off the table in 1 activation from anywhere on the table as long as he can draw LOS. This helps a lot in a crew that is typically going to be outnumbered and was slow as.
In wave 1, I played Justice and McMourning a lot and in those crews, Frankie was typically just another body with a nice trick (+2/+2) because of his weak synergies with those masters and crew. He added no real value other than just another sword (albeit a very good one) and pistol into crews that are already bursting at the seams with swords and pistols. I also found that his Df5 was sucking up all my stones so that wasn't an acceptable situation. So I dumped him for Hans who helped me in dealing with fast scheme minions, ghosts and shooting into melee in general.
Now that the guild has access to a wider array of abilities and faster minions in general I am able to 'downgrade' Hans to Nino.