Trained medical professionals have an extremely hard time diagnosing cellulitis without a culture, but I am sure you're anecdotal evidence is basically 100 percent proof.
And I am also sure that such evidence is enough claim, to say that garlic is an effective cure for something that is known to kill a large amount of people every year. There are some really poor clinical trials on Google scholar, but they're really bad. And they all show that it took garlic upwards of eighteen weeks to cure mrsa, with zero evidence that it was the garlic that did the curing. (no control groups) Which further leads one to assume, you didn't have mrsa