Sylveon + Galarian Stunfisk (yeah, it's weird)

Ok.  So I really like the logic behind Sylveon VMAX decks.  Even though they're essentially no match for the formidable Suicune V, I love how the build essentially demands that you flood your bench with different types.  It's sort of a double-edge sword.   On one hand, it's got the main strategy of combos between Sylv and Ursh.  On the other hand, perponderance of types lends any Sylveon VMAX build a counter-box quality.

So, why is it, then, that this -- my least logical

Ok.  So I really like the logic behind Sylveon VMAX decks.  Even though they're essentially no match for the formidable Suicune V, I love how the build essentially demands that you flood your bench with different types.  It's sort of a double-edge sword.   On one hand, it's got the main strategy of combos between Sylv and Ursh.  On the other hand, perponderance of types lends any Sylveon VMAX build a counter-box quality.

So, why is it, then, that this -- my least logical Sylveon build -- has been the winningest I've play tested?  This build has SO many things going against it.  All special energies make it vulnerable to fan of waves and Duraludon VMAX.  No Galarian Moltres V makes it impossible to counter dark-weak stuff like Mew VMAX.  It would make far more sense to include some basic energies, plus Leafeon V, Moltres V, or both as energy accelerators.

Bur for some reason, this is the build I've landed on with Sylveon.  I was struggling with the most common version of the archetype -- dark energy.  So I experimented with weird variations and this one wins the most.  70% win-rate thus far on the ladder.

Could the secret be this ridiculous little Stunfisk?  Since Sylv's attack gets stronger with various types, I thought, "why not throw in this one extra basic?"  It's got an ability to place 30 damage on any attacker, even if it gets knocked out.  Not to put too fine a point on it, but thus far I've won every match in which Stunfisk was my starter.  It either gets knocked out, sharing a little pre-damage, or I'm able play a switch card out of it and it sits on the bench adding power to Sylveon's main attack.

Thoughts?  Give this one a try -- I'd love to hear what you think.  Are my ladder wins just a fluke?  Or is this seemingly random Stunfisk addition the key to get Sylveon back on top?