The Superhero Database Classification number, or SHDB Class, is a number that represents the overall 'power' of a character. All traits of a character are used for calculating the Classification.
What it DOESN'T mean
This doesn't mean that a higher class would always beat a lower class character. But the bigger the difference in Class is, the more obvious it is who'll win in a fight.
How is this calculated
( INT^1.3 + (STR*0.5 )^2 + (SPE*0.5)^2 + DUR^1.6 + (POW + (SPS*SPL))^2 + COM^1.8 ) ^ TIER
Super Power Score and Level
Every Super Power has a score (SPS) that is used to calculate the Class. Each Super Power also has 3 levels (SPL). The level is set when connecting that Super Power to a character. The level determines the final score, of the Super Power, being used in the calculation.
(1) Enhanced Strength: Stefan exhibits superhuman strength, far surpassing that of a regular human. This allows him to overpower opponents and perform feats like lifting heavy objects with ease.
(2) Enhanced Speed: Stefan can move at incredible speeds, making him faster than the human eye can follow. This ability is useful for both combat and evasion.
(3) Enhanced Senses: His senses of sight, hearing, and smell are heightened. This allows him to see in near darkness, hear faint sounds from great distances, and detect scents that humans cannot.
(4) Immortality: As a vampire, Stefan is effectively immortal. He does not age and is immune to diseases. However, he can still be killed through specific means (e.g., exposure to sunlight without a protective ring, a wooden stake through the heart, etc.). So probably blue or grey immortality for him
(5) Healing Factor: Stefan can rapidly heal from injuries that would be fatal to humans. His healing is accelerated and can regenerate from wounds quickly unless they are caused by specific weaknesses like vervain or werewolf venom.
(6) Compulsion: Stefan has the ability to control minds and alter memories through eye contact. He can compel humans to do his bidding or forget certain events. However, his ability to compel is limited against those who have ingested vervain.
(7) Daywalking: While exposure to sunlight is lethal to vampires, Stefan can walk in daylight thanks to a magical ring created by witches. This ring protects him from the harmful effects of the sun.
(8) Heightened Emotions: Stefan experiences emotions more intensely than humans. This heightened emotional state can be both a strength and a vulnerability, affecting his judgment and control.
(9) Telepathic Connection: Stefan has a mental bond with his sire and those he has turned into vampires. This connection can allow for a limited form of communication and sensing each other's presence.
(10) Dream Manipulation: Stefan can enter and influence the dreams of humans and other vampires, often used to communicate or manipulate subconsciously.
(11) Power Amplification: Drinking human blood enhances his strength and abilities. While he typically avoids consuming human blood to maintain his humanity, it makes him more powerful when he does.
(12) Supernatural Awareness: Stefan can sense or detect other supernatural beings, like other vampires, werewolves, and witches.
For his tier, Stefan has never demonstrated any power or ability that suggests that he can destroy a planet. His strength, while superhuman, is not on a scale that would allow for large-scale environmental destruction. I’d say Tier 2 is really the only way to go for him.