SMBIOS question (planning not doing right now), new to this and there are two very similar CPUs

So basically looking through everymac.com, I found that the MacBook Pro 12,1 has an i7-5557U, which has iris graphics and higher clock (3.1GHz) and then there’s the MacBook Air 7,2 with an i7-5650U with intel HD 6000 and a closer but lower clock speed (2.2GHz).

I have an i7-5500U with intel HD 5500 @ 2.4GHz, so should I go for the closer SKU (5557) or the closer graphics (5650).

Thanks!