Having only seen the CTX700 and F6B and not actually sat on either, it at least looks like the CTX1300 is pretty well situated right in between them. You nailed it as far as what it is -- a cruiser-tourer with just a hint of sport.
And the drivetrain has more than withstood the test of time, having spent more than 10 years in the ST1300. Absolutely no comparison between it and a big twin, V or parallel -- it is definitely its own kind of animal. It won't have the neck-snapping low-end jolt of your Rocket or even the Thunderbird; but what it does have is a long, smooth, steady pull that still has the ability to catch you by surprise. Plenty of grunt for riding two-up, too. It just has to be ridden to be appreciated.
And the drivetrain has more than withstood the test of time, having spent more than 10 years in the ST1300. Absolutely no comparison between it and a big twin, V or parallel -- it is definitely its own kind of animal. It won't have the neck-snapping low-end jolt of your Rocket or even the Thunderbird; but what it does have is a long, smooth, steady pull that still has the ability to catch you by surprise. Plenty of grunt for riding two-up, too. It just has to be ridden to be appreciated.