If he had his canon weapon, I think they'd be more evenly matched, since it's a super-fast distance weapon that he could use to prevent Sonic from getting too close. But without it, it sounds like Sonic's the better equipped of the two... and while I'm totally fine with Gojyo getting his ass beaten, IC Gojyo'd realize that Sonic was better pretty quickly and he wouldn't want to risk getting killed by somebody he doesn't really know, you know? Once they get to know each other and it can be established that it's a fight to the beatdown and not to the death, then Gojyo'll be all over that.