Canon FD 85 1.2 vs Rokinon 85 1.4

i've often been near mesmerized when looking at samples pics from the Canon 85 1.2 (or 1.8).
i'm sure the Canon 85 1.8 would more inline price wise with the Rokinon 85 1.4.
for m4/3 (OMD)....
anyone have some comparos/opinion(s) on the two
Rokinon 1.4 @ 1.4 vs 85/1.2 @ 1.4
and/or Rokinon 1.4 @ 1.8 vs Canon 1.8 at 1.8
(Should just wait for 75 1.8?)

also..i've read that FD still used the SSC but simply dropped stamping the SSC lettters on FD stamped lenses at some point.

i've also read that some SSC lenses contain Thorium. i would be happy to find out that i misread or some one is missinformed in their writing. in either case would an SSC and/or FD 85 1.2(L) likely be a "Hot lens"?
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Thanks,
Paul