What is actually the Major difference Between 3528 and 5050 and 5630 LED SMD Diodes

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What is actually the Major difference Between 3528 and 5050 and 5630 LED SMD Diodes
That answer is actually simple, actually. These figures relate to the particular surface area of the SMD (Surface Mount Diode). The initial two numbers represent the width and next two make up the height (both have imaginary decimals in between them). The subsequent concern is: are 5630 LEDs brighter than 5050 and 3528 LEDs? What is actually the brightest LED type?