Although they've never been seen together, they can't be one in the same. jimmy2190 wears glasses and is awkward in an 'aww shucks' kinda way. I believe the name Assari is Finnish for Man of Steel. And he always seems to show up when needed the most.
I don't think so. I think Assari legitimately can't keep his past/present/future tenses straight. I haven't scene that with Jimmy2190 , who can't find the up shift or space bar. I'm more leaning toward Sammy being back.