you were saying the same thing last year about Andre Smith's injury proving his worth... back assward logic.
spikes might have a greater impact on his squad then McClain does on his squad... but that doesn't mean spikes is a better prospect than McClain. All that means is that FLorida needs Spikes. And we don't know how bad Alabama needs McClain because he hasn't gotten hurt! Both probably are their team's most valuable defenders respectively... it proves nothing. In general getting hurt doesn't help a players draft stock.
We do know that when ALabama lost Hightower, McClain stepped up.
I question what Spikes is gonna do when he gets timed by a stopwatch.