Actually it does make sense for as many peers as possible to get on the same chain. The more peers that agree a specific chain is correct the better it will become for all.
It does make sense if Cryptsy is on the same chain. But unfortunately it is not.
Unless cryptsy upload their blocks (or maybe a list of block hashes that could be added to checkpoints.cpp) it's damn near impossible mission to get on to their chain because there are so many forks out there.