TOTALLY different.

They must be a totally different Species, even if genus is the same. Unless it's enough that a varietal change will do the trick.
I thought, when I bought it, it was a funny shape.
The only thing the Added Ringpull did was let air in so that liquid ran out the prescribed hole faster. Having broken in relatively easily I find not only is the flesh about 1/2 thickness, or less; it's a radically different texture/flavour.
WHATEVER next?