They are essentially the same, twins so to speak, haha! I have actually owned both, I now prefer the handlebars and risers of the Speedy, but I kind of miss the front wheel with spokes look, although that is no longer an option on the new America's.

Triumph Scrambler Diablo Red & Silver (2014), Arrow Exhaust, FI remapped with TTP #4, 16 tooth sprocket, Triumph Gel Solo seat & Rack, Progressive 440 1" lowered Shocks, SAI & O2 Removal, Airbox Restrictor Plate removed.