This is kinda strange.
I put my VIN for my 2018 Accord Sport 2.0T into Carvana, and the offer seemed really low. I noticed that when I selected options it had the 1.5L defaulted and I had to switch it to 2.0L. So I went back through the quote process but this time left it on 1.5L; the price was only $12 different than the first time 
So Carvana does not seem to recognize that the Accord Sport 2.0T trim exists.
edit: Did the same in KBB website and KBB gave the same almost equivalent valuation, so it’s a KBB problem not recognizing the trim difference. Told Carvana chat lady and she regurgitated some general info on how they value cars.
Makes sense now why Carvana doesn’t have a single 2.0T Sport for sale but they have a bunch of 1.5T Sports.