Gladiator Beast fusions special summoned by super polymerization?

[Saintslayer]

I noticed some players using super polymerization to special summon GB gysarus/heraklinos with opponent's GB monsters using super polymerization saying that all the materials are on the field and also the contact fusion is a fusion summon, so this can be used as another way to special summon GB fusions?, or the GB fusions requirements prevent that from happening?

 

[Maruno]

Gladiator Beast Heraklinos
Fusion Monster (Beast-Warrior / FIRE / 8 Stars / ATK 3000 / DEF 2800)
"Gladiator Beast Laquari" + 2 "Gladiator Beast" monsters
This card can only be Special Summoned from your Fusion Deck by returning the above cards you control to the Deck. (You do not use "Polymerization".) You can discard 1 card from your hand to negate the activation of a Spell or Trap Card and destroy it. You can use this effect during either player's turn.

Here's an example, but of course it applies to all the "Gladiator Beast" fusions.

Note the emboldened part. That's how you get it out of your Extra Deck. You can't do so any other way. Using "Super Polymerization" is just wrong.