Found you a bit of info on TundraTalk.net
I can definitely endorse the Tundra over the Titan, I have owned two Titan KC.LE 4X4's and only got 9600 miles out of the 04 and 22kmiles out of the 05.
It is known that the Titan has very weak front and rear diff,transfer case, front axle and rear axle seals.With a lift, these parts designed for a Jeep Wrangler and Frontier fail even faster.
While at first glance the Titan looks cheaper, but when you look at the features you get with the Tundra, the price difference disappears.
Only some titans get VSC and it is bundled with other options that make it expensive.Also, only some Titans get ABLS, which if you have it you can't turn it off. All Tundras come with VSC, TRAC and A-LSD, 4WD come with A-TRAC, plus you can turn these on or off as you please. The Titan's tow mode is joke, all it does is change the shift points in the first three gears. The Tundras tow mode changes the shift points when up shifting from 1-6 gear and when down shifting from 6th-5th, 5th-4th and 4th- 3rd gear. The Tundra's tow mode does other things which I won't go into now.
Another thing to consider is that the Titan may be canceled, sales dropped another 30% in Jan. to about 3600 Titans sold.Add that to the Titan's huge warranty claims and Nissan is bleeding $.
In less than 2 years, I had over $12k worth of parts replaced and that was the good Titan. The sad part was that the same parts continued to fail, so it didn't really do any good to replace them. One good thing is that you could mark on your calender when you expected the parts to fail again, Nissan was very good at building in a very limited life span to their parts.