It seems like almost everyone is familiar with these heroes in one way or another (even if they've never seen the films), while Pokemon and Magic: The Gathering are much more niche
Sweet abilities
You can buy a playset for under 50 cents
The tracker is accessible through the TCGplayer app, making it easy to check your collection on the go
As design philosophy has changed and they have added more value to cards (including lands), card advantage has become less of a constraint, and being constrained as mana has become the games core constraint
"Dash [cost]" means "You may cast this card by paying [cost] rather than its mana cost," "If this spell's dash cost was paid, return the permanent this spell becomes to its owner's hand at the beginning of the next end step," and "As long as this permanent's dash cost was paid, it has haste." If you choose to pay the dash cost rather than the mana cost, you're still casting the spell