Not sure I can answer adequately or not...but here goes..I still have my 08 Vulcan Classic 1500 and late last summer bought my XCT. WAYYYY different bikes.
There are still things I like about the Vulcan; hydraulic clutch, a smoother (tighter?) trannie, the great Mustang seats I put on it....But the Tour is different in some ways and better in others. Different is the transmission; it took some getting used to the roughness of shifts and the BANGing of the first three gears. It's getting a little smoother now but again it takes some getting used to. (I'm told the first three gears are straight cut to help deal with the gobs of torque coming from 106 cubes and the last three gears are spiral cut, true or not; don't know.. but that's what I was told).
Comfort-wise, there's no comparision; the heated grips and seat came in handy this morning, the wind management via the lowers and new windshield and the fairing winglets allow me to tailor the wind to full-blown or almost nothing (even to the point of being able to enjoy a fine cigar while riding). Cruise and radio are great pluses as well (even though nobody can figure out why I get AM reception while stopped but almost nothing while moving/FM reception is fine all the time).
I'm not a real hard rider, so I can't tell you which is better at the limits of performance and handling. But they're really two very different machines...I wouldn't expect them to be produce the same handling characteristics especially. The fairings and trunk on the XCT DO catch a fair amount of cross-winds...that was a learning curve too, but once you get it wound up and the cruise set, I can see covering a lot more miles a lot more comfortably on the XCT. The Vulcan has a wider power curve, it can pull like a tractor at lower RPMs, but the Vic power curve feels a lot stronger in a narrower range.
Maybe the XCT is not the best for a daily to/from work rider that the Vulcan can be, but again, one's a crusier and one's a Tourer.
'12 black XCT
'08 Vulcan Classic 1500 (wanna buy it?)