The MacBook Pro Early 2015 Retina has a better processor family than most notebook PCs of this age and spec. This laptop has an Intel Core i7 processor family, whereas most laptops that are a similar age to it have an Intel Core i5-5xxx processor family. The best processor family of all similar spec laptops that have been available for more than a year is Intel Core i7-3xxx and the worst is Intel Core i7-6xxx.
We think you might also be interested in some of the alternative portable PCs that have an Intel Core i7 processor family currently available including because of it's better review score, the Apple Macbook Pro Mid 2014 Retina ($2,409.99).
If the processor family of this Apple notebook PC is too bad for you then you might also want to look at the Sony VAIO Duo 11 (Intel Core i7-3xxx), or the Lenovo Helix (Intel Core i7-3xxx) which is also higher rated.