Potato onions/multiplier onions should be larger than shallots. I don't know the reason, but many people say their's only get to about shallot size. Either way, they'd be bigger than the Egyptian's and that is what I was interested in.
And, I have good success with my shallots, they get pretty big for me. Below are some of my shallots that my chickens dug up a few days ago.
