Literally whats wrong with most axis tanks. Specifically the panther.
Panther at least has good speed. Crocodile needs to be used in close quarter fights, has bad mobility and needs to be driven back from almost all fights after a few secounds because eating 2-3 rounds of AT-guns or tanks means you have to drive back to base or risk losing your 230 F piece of shit to a diving tank.
I understand that Crocodiles used to be very OP in 1v1 and still are good in 1v1 in this patch but they are just garbage in team games. I can´t even remember the last time an opponent used one in 2v2 or up against me. There is probably a reason for it.
The KT is probably a good comparison to the Crocodile in a way. Same as the Crocodile it arrives late game when there are numerous vetted AT-guns, TDs, several medium tanks, Ptrs/zooks blobs, etc. that render it useless in 80% of games. Same as Croc investing all those ressources into a KT is a good way to throw the game.