I had a 2005 America I really liked around town but not so much for cruising. The T-Bird is like a bigger, better America which is why I bought the Rocket 3 Touring model.
Haven't ridden a bike for for about 38 years, bought an America, did 600 miles and traded it for a 1600 Thunderbird, did 1200 or so miles on that and traded for a Rocket 3 Classic.
For me the America did not feel right, took out a Thunderbird for a test ride, it felt a lot better balanced than the America, went around corners better, pulled a lot stronger.
Then I took out a Rocket for a test ride, surprised how mellow it can be at low revs, plus it did not feel that much heavier than the Thunderbird. The acceleration did it for me.