Good hypothetical matchup here. Adamek was a good LHW, and had a great fight with Dawson AND had a pretty solid chin too, but the Krusher was more complete and was a bigger puncher at the weight. I gotta go with Kovalev UD or possible late stoppage.
2013 K vs 2007 A? Adamek gets Krushed or loses wide UD. Adamek granite chin, but too many punches from Kova would probably fell him