I don't know... I own a 2013 MBP and also use a Thinkpad P52s for work, and I really hope there's a better competitor than the Thinkpads.
The Thinkpad feels cheap and poorly built compared to the MBP. The plastic creaks and it feels like it's going to fall apart when I carry it with one hand. The trackpad isn't nearly as good, and I had to dig into the X11 configuration to make it work reasonably. I've only had it for 10 months, and I'm already worried that the USB-C plug may be breaking.
Meanwhile, the MBP has sustained 6 years of abuse and still feels solid and works great.
As far as specs go, the Thinkpad is fine, but I'd be sad if I had to buy one with my own money.