I think I can weigh in on this since I have owned both.
1) 2009 DCLB Trd sport-nice truck. Had a topper with leather interior. Comfy ride but it drives LONG. the xtra 13" on the frame with the 6' bed made it feel like a wiener dog going down the road.. Long and narrow. It was a pain in tight parking lots as you have to swing it like its a fullsize long bed. The 6' bed was nice to have but besides sleeping in it I didn't really need it.
2) 2012 DCSB trd off road. -huge difference with the shorter truck. Drives similar to my 4dr jk. I don't look to " swing it around" in parking lots looking for the safe spot to park. Drives like an SUV if that makes sense. I now feel like it will work off road without dragging belly all over. Feels better all around.
NOW THE BED SIZE DEBATE. .. I bought my tacoma for a off road/ overland rig.The short bed is a HUGE cargo area. More the my 4dr and 2dr jk combined. More then most ,if not all, SUV on the trail. I look at it as a cargo area and not a truck bed. Combined with my soft topper I have a cargo area separate from my cab area that is protected and I can't smell the cargo and I can carry a lot of camping gear, fishing gear rafting gear etc etc. it's a gigantic trunk. Combined with a manageable wheel base you have a gear carrying off road vehicle.
now if I thought I needed the extra half foot of bed plus a crew cab, I would just buy a full size truck over a DCLB. It will have bigger interior and more comfortable, 6' bed and an nice width. Basically if you max out the short bed all the time you should look into a full size anyway. But I bet out of every 10 trucks I see in a day, maybe 4 of them ever really use the bed and I think that's high estimate.
In the end.. I know what I bought this last time around and never once had I wished for the 6' bed again. I bought the DCSB To be a trail capable vehicle and max interior space with a cargo trunk.not a truck with the purpose of doing " truck" work. Both are great trucks in the end. Both can be wheeled it's more of a personal preference. Ideally, the access cab with a 6' bed is the best all around option as it's identical length as a DCSB. WITH THE LONGER BED