Quicksilver is pretty fast, but he’s never dealt with someone as fast as Sonic! Sonic could run rings around him with ease. Sonic has many more power ups at his disposal and let’s just say that he’s also got a lot more experience under his belt. Sonic has dealt with “gods” and other powerful opponents. He even took on the Ultimate Life Form! Sonic wins.
DReager1.com 
If Sonic can beat Flash, he can definitely beat Quicksilver!
Definitely, Quicksilver is outclassed in this fight. He can’t even approach Sonic’s level of speed!
Even though I like Quicksilver better, Sonic easily wins here. If he went up against Flash that would be a different story though.
Yeah, the gap between Flash and Quicksilver is a little too fast. Sonic vs Flash is certainly a lot closer in comparison