Since the given creature attacks the controller, they count as the defending player for, say, annihilator
This is because they improve existing meta decks or unlock the potential of archetypes sitting just outside the elite tier of decks
Still, Izzet Charm sees play all the way back to Modern and shows up in some Commander decks because the power of Izzet Charm is based on its flexibility, not its efficiency
Battlecruiser is the term that best describes games in which cards that cost 8+ mana battle among themselves
One to clear the way, another to erase their trail
But the table does suggest that you should be leaning more towards the best four performing archetypes (BR Party, BW Clerics, RW Warriors, and UB Rogues) if possible