I think neither the Book nor the Pro are comparable to a 15'' MBP.
Book is 13.5'', Pro is 12.5'', too small for me. Both max out at a dual-core Core i7-6650U (it's hard to find out exactly, the specs don't say anywhere, but that's what reviews tell me), which is two cores less than my MBP. Both max out at 16GB RAM, same as MBP.
Book is 13.5'', Pro is 12.5'', too small for me. Both max out at a dual-core Core i7-6650U (it's hard to find out exactly, the specs don't say anywhere, but that's what reviews tell me), which is two cores less than my MBP. Both max out at 16GB RAM, same as MBP.