As title suggest, how much better is Guinafen than Sampo for an Acheron team? I wanted to use Sampo because he looks more fun to me to use, but is a big DPS loss for my E0 S1 Acheron? I would use Sampo/Guina with S5 GNSW.

For context, I am a newer account and have the following units: Acheron, Argenti, Jingliu, Pela, Bronya, Ruan Mei, Tingyun, Hanya, Luocha, and Huo Huo, I have an unbuilt Sampo and Gui so this is why I am asking the question in the title. I just want to know how big of a DPS Loss that Sampo might be. My intended teams are below (I can rotate in Argenti, Hanya, and TY as needed):

T1: JL, Bronya, Ruan Mei, Luocha | T2: Acheron, Pela, Sampo/Gui, Huo Huo