>>282159018
>Each hero shares with the others the game mechanics of the game they played in their world
Not really. Each weapon has strengthening methods of their own. If the summoned heroes know things that could help them master the weapon faster that would be a plus but it's almost always down to the criteria the weapons set when heroes are summoned.
For example, Naofumi was the first best choice for the shield. Ren, Motoyasu and Itsuki are hero material but were flawed. Second or third choices at best.