Touch Flo 3D Confusion??

[deadwrong03]

Im getting mixed up with all these different touch flos going on here i need a little bit of clarification

the Verizon and Sprint Touch Pro 2's ship with Touch Flo 3D 2.1 correct?

so what does the HTC Imagio have on it? its different in that it has the weather in the clock, but its not the sense ui that has the moving clouds, leaves or whatever blowing through the whole screen like the HD2 does? the Imagio also has the GPS location in the weather tab

and now the U.S. Cellular version of the Touch Pro 2 has the weather in the clock and the touch flo icons of the HD2, has the weather dominating the home screen (i.e. leaves blowing or clouds passing through the whole home screen) but it does NOT have the 3 rows of shortcuts underneath the Call History and Appointments on the home screen like the HD2 does...what is this touch flo called? and why is this different from the Imagio's touch flo? what makes it different?

is the imagio not HTC sense because the weather doesnt dominate the home screen? is the imagio not sense because it doesnt have the icons of the hd2?

Whats the difference between 2.1, 2.5, and Sense?

im just trying to get a better understanding of the seemingly various versions of touch flo that are coming out of no where any help is appreciated