On paper, it's a complete mis-match. But last years team should have beat just about everybody they played, on paper. Obviously from a physical and athletic standpoint, the 2011-12 frontcourt is head and shoulders above this one. However, you have to consider where these players were in terms of their growth and development at that point in their careers. Andre Drummond looked unstopable at times. Roscoe Smith was in Calhoun's doghouse for the better part of the season, and Alex Oriakhi was utterly unproductive.
Ultimately, it's a situation where Drummond can name the final score. If he dominates like he did against West Virginia and Syracuse, the 2011-12 team would win by double digits. If he plays like he did against Columbia (0 and 4), Maine (4 and 2), Seton Hall (4 and 5), etc., the far superior grit and chemistry of the current team would win out.