I haven't trained MR at all, so that would surprise me.
Anyway, a medal at MR will be harder than in GP I think.
I think at the moment I would rate myself as #4 in the world at MR, behind Sami, Neo and also ScouB (judging by his insane NTSC MR campaign on SNESOT where he completely destroyed me!
).
I can beat all of the above, but I can just as easily lose to Harold, Mario and you, which in my eyes are really similar in MR lvl to me.