“The new 15-inch MacBook Pro features powerful Radeon Pro discrete graphics delivering up to 2.3 times more performance than the previous generation; while the 13-inch MacBook Pro comes with Intel Iris Graphics that are up to two times faster than before.”
Compares GPU (Metal) with the Core i5 2.7 GHz dual-core in the MacBook Pro (Retina, 13-inch, Early 2015). No baseline named, read as the previous generation.
MacBook Pro (13-inch, 2016, Two Thunderbolt 3 ports) announcement, October 2016, Apple Newsroom, MacBook Pro (13-inch, 2016, Two Thunderbolt 3 ports) announcement, October 2016
GPU
Claimed up to 2×
No data