i can't choose one over the other because i love all of my children the same

i don't even know if the speedy 22 is available anymore as i don't see it on the us website?
but here are important details of each that may help you decide:
the coussin allows you to be more organized without a bag organizer. it has 3 compartments with the center one having its own zipper in addition to the outside purse zipper. the speedy you will need a bag organizer to find your things if you hate having one large compartment.
both bags come with casual, cotton, cross-body straps and then more dressy chains. the chain on the coussin is heavier and has LV logos embossed on it while the speedy chain does not have the embossing and is slightly thinner and more lightweight.
the speedy also the top handle option. i sometimes remove the chain and strap and carry the speedy by the top handles for a more delicate evening look. the coussin CAN be carried as a clutch/baguette but i am only 5'3 and it looks silly like that on smaller women to me.
the coussin looks weird if you try to put fat/thick items in it that make the bag shape puff out too much. the speedy is easier to throw any item into and not worry about placing it in the bag or worry about the shape of the item.
the coussin is easy and cute to carry using the chain only as a shoulder bag. it fits nicely under your arm. the speedy i find is too puffy in shape to carry that way and i worry about squishing it so my chain is never used as a shoulder bag carry which (i believe) is the intention of the chain.
those are my initial thoughts after carrying both bags several times!! i hope this is helpful! happy friday eve!