Tribute is usually a cost, while Fiendish only negate effects. And since the monster is no longer on the field after it is tributed, Fiendish no longer affect it, thus its effect will resolve.
super heavy samurai are machines monsters.
From the anime we were already told that machines were resistant to magic and traps. If you use a spell or trap against super heavy samurai it's not guaranteed to work.
its work. glass slipper is an equip spell, description, lose 1k atk n cannot atk, their monster cannot negated bcuz its not destroy the cards, its EQUIP