While we're sort of on the subject, those carts do not have 4MBit of save memory. They have 2MBit of flash that is shared between the firmware (takes 512KBit), the code list (stock code list takes around 155KBit) and saves. The saves do get compressed by the AR firmware, but compressibility of saved games varies, so claiming a hard capacity of 4MBit is kind of silly.
How you want to handle this is up to you; I won't deny that EMS created something of a BS-fest by originating the claim...