Well, I stand corrected. I hadn't heard that Bumblefoot version. That certainly is very similar to the released version of Absurd. Bummer. I thought Slash/Duff reworked the classic Silkworms (Village, RIR, etc.) and made it their own.
Regardless, I still think there will be very little change to the released version of Perhaps. Which to me, isn't bad since already like the song. Actually, it might be worse since I like the original solo. Just hope they can sort out the chorus so it doesn't sound like a mess.