Couldn't hurt as circuits only draw what they need when it comes to amperage. It's true, you CAN run a JVC X'Eye off a Genesis 2 power supply - it will run both the cartridge slot and CD drive. However it's still WAY underrated which isn't good for the system and will most likely cause damage / fire / melting / etc.
Then again I found my JVC X'Eye AC adapter, part AA-S95J, in a box of trash at the local flea market for $1. I had to recondition it as it was in rough condition but now it's assuring to know I have the proper power for the console.