Depends on the track. If you are asking specifically about the TX tracks, there are some significant differences.
At Texas World Speedway DCT vrs 6MT will not make a huge difference since the track is mostly high speed sweepers.
At Motorsport Ranch, I think DCT would make a MUCH bigger difference. Even moreso on the 3.1. There are 2 turns where I would LOVE to go from 4th to 2nd. With my 6MT 330, I need to either brake sooner or just do the turn in 3rd. I don't have the skill/speed right now to threshold brake and go from 4th to 2nd.
If I had a DCT...too easy.
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