In 5e the primary feature that sets apart the sorcerer is metamagic. The "sorcery points" CAN be used to create spell slots, but that is not their main use. You can select various metamagic from a list (and note that ONLY sorcerers get access to this) and do things like quicken a spell (allows spell to be cast as bonus action, which allows you to cast a cantrip on the same turn) or empower the spell (reroll low dice) or my favorite, twin spell, which allows you to hit two targets with a spell that normally only targets one (so put haste on your two front liners, for instance). There are several other metamagics that can be selected as well.
The metamagic makes sorcerors fairly distinct from wizards, even though their spell list is technically the same.
Mechanically, the sorcery points do a good job of making sorcs play different from wizards, but you may add on to that the fact that sorcerers prioritize charisma, which means that they will be entirely different from an RP standpoint (whatever that means to you).
Last edited by dwig; 13/06/21 07:50 PM.