The Hasbro is wrong in so many little ways, there's no comparison (gloves shiny, torso bags on sides made of shiny something, visor too small and not shiny, boots wrong, no weathering at all, etc, etc). Perhaps if you had a massive display and the Hasbro was in deep background. But its like comparing the Hasbro stormtrooper to a Sideshow stormtrooper.... or a Sideshow stormtrooper to a Hot Toys stormtrooper.
The SS Scout should fit the Hasbro bike much better -- he's slimmer and more poseable. But the clean bike will need some weathering.
I didn't get the SS bike either -- $500 total for this character is not for me -- but was wondering about the bike myself, that's why I took the box out. But after seeing the size and space it would take, I think I'll just leave his Scout as a loner bunched with other terrain troopers.