No, our Sun is an average star being.
The largest would be UY-Scuti.
The smallest wold be EBLM J0555-57Ab, a Saturn sized star, but size dosent add to power.
The opposit end of the question, the weaker stars being the M-Clas rad and brown dwarfs, (Im adding jupiter as a planet that thinks it's a radio rich M-Class star, but jupiter being just a little stronger than some,
Jupiters Jovian system..
The strongest by far would be the tiny class of Neuteon stars, non more powerfull than the Magnetars, some of the most powerfull stars we will ever find.
Can be stronger than some black holes.
