Controlling TFT LCD with Arduino
Trust what is on the board, not what the eBay seller says. They invariably can't tell the difference between a TFT screen and a doll, and they sell everything in between. They just regurgitate Chinglish nonsense. If the board says DB0-DB15 then DB0-DB15 is what you need to use.

Plus it says in the description:


  Support 16 bit RGB565 format , can connect any 16 bit data bus.


At least this one has told you what the driver chip is (OTM4001A) - many times they can't even do that and don't even understand what you are asking when you request that information.

Mind, it's a driver chip I have never come across before, so maybe I should get one on order to support it in DisplayCore...