I think Szpilka is too dangerous for Wilder actually. He may not pack the wallop Stiverne does but he's a much better mover and overall boxer. He could actually get to Wilder and check his chin in ways Stiverne was too limited to consistently manage.
Well, he was already twenty when Soundgarden wrote his anthem. Grunge is played on the oldies stations, man. :-( Harsh realm!
What's the record for # of knockdowns swapped in a 10-round heavyweight fight? (which this would presumably be, since neither brings any hardware to make it 12 and their relative spots in the rankings don't quite work out for it to be an eliminator) This could be a contender. Both are susceptible to getting dropped (and each has more than enough clout to get it done to one another) but they are both resilient enough to keep getting up. :good