Demos of griefing would go a long way here. I doubt he hacks. Or if he does, then he's probably toggling and very good at hiding it, so we likely can't prove it with demos. The best way to get him banned (if you truly feel that he is a serious griefer), is to get a demo of him glitching or teamkilling.
As far as the stats go... it sadly doesn't prove or support anything since we know he loves to camp and use the RPG. Camping with the RPG is easy and I'm not surprised him kdr isn't higher actually.
Shiiiiiiiiit, all my demos of this cheating aimbotting asshole are either wallhax0ring or aimbotting, no griefing. If only somebody had demos of this walling, aimbotting war criminal griefing, that would be wonderful. Please upload them ASAP.
and don't forget to do sb_status, because i had demos of this hax0r aimbot headshotting and wallhax0ring, btw he has to be #1 hax0r in insurgency because he's been hax0ring since forever, and some admins, don't remember who, but probably those douchebags at SCK said you need sb_status or some muck on all demos. bullmuck.