The guts are identical for an identical Kv. Think Chevy & Pontiac. The differences are cosmetic. However they sometimes offer a different Kv option eg Hyperion Zs3025 has a 970Kv I like for a Power 25 replacement.
Scorpions all come with back mount hardware. NOT ALL Hyperions come with backmount hardware. Read the website info carefully. I have had good service from allerc & aircraft world (Japan)