Infusion is a coin in glass rather than coin in bottle and in my opinion is less impressive. Whilst it is true that Factory Sealed requires only seconds to set up, it is not impromptu - you cannot set up in front of audiences, you'd have to turn your back at the very least or go to the bathroom or disappear around the corner to do it - unless the building across the road was on fire AND your spectator forgot their glasses.
Others have posted where they have literally done the secret right in front of specs at a crowded ball game. No one is watching you, they are watching the game. To the specs it is pure magic because you just bought the bottle.
It even says on the product page under FAQs where you can do it right out of a vending machine. You have to structure your routine around it.
By the time you turn around after getting it out of the vending maching you can be ready to go, it's that easy and that practical. No one is expecting anything at that point. You are just getting a drink.
I agree with that Infusion isn't as powerful.
Even though you can pick up and go with it, the fact that the container is open and done too fast isn't as impressive as a slow penetration in an unopened bottle with a borrowed coin. The fact that no gimmicks are used is great though because you don't need to carry anything around with you. Nothing to rely on.