The liquid eggs come from cracked eggs, so yes, they are the same.
Expiration and 'use by' dates are the very shortest amount of safe time. The vendors use a date that makes sure *no one* has to risk spoilage under normal circumstances. That means that the majority of the time the product lasts longer than the packing says it will.
A 'best by' date doesn't mean that it's gone bad on that date. It's just not at it's best anymore. I eat things that are not the best all the time. Sometimes my celery stick is starting to bend by the time I eat it - it's still good, it's just not best.
I agree with everyone who suggests smelling, feeling, looking at the item. Watch for cans rusting or denting. And, um, practice smelling your food when you bring it home so that you know when it starts smelling!
Those who think they have no time for a healthy lifestyle will sooner or later will have to find time for illness.