OnePlus has just released a video on its official YouTube chanel on comparing the Dash Charge of OnePlus 3T to the Google Pixel XL. OnePlus 3T has done a fast charge of 90 minutes to full charge while Pixel XL needs 120 minutes. See the video below:
Anyway, this is just a test from OnePlus and the OnePlus 3T wins. Actual charging speed may vary depends on your phone condition and configuration.
Click here to see full specification of OnePlus 3T https://phone855.com/site/view/4487
Click here to see full specification of Google Pixel XL https://phone855.com/site/view/4471
Source: YouTube