Man, I knew I wasn't trippin. It seriously made me triple check the size on the inside of each shoe from DSG because there was no way they were both 11.5s just going off of feel. I'm talking to the point where I wanted to call Adidas customer service and explain I ordered a pair from DSG and I think there's some manufacturing mistake. I can't believe a company as big as Adidas can have such inconsistency with the same size of a shoe in reality being different from another identical size of the same shoe within the same brand.
And to top it all off, my pair from NiceKicks came in that I ordered my TTS 12 in and that fits just as snug as the 11.5 I have from Adidas (not the DSG pair) so I am probably going to return the Adidas pair since I got the NK ones for $98.
My head wants to explode typing this but I guess it's worth buying 3 pairs to find the perfect fit (sarcasm)