Common sense tells you that both the B1G and SEC will likely not have 4 worthy teams every year. And if they do, they will get in anyway. Trying to legislate worthiness is a fool's errand, but there are no lack of fools in either conference's decision-makers. I would easily argue that no auto bids would be necessary as there is no solid reason...other than greed and arrogance...that supports that opinion.
Also, auto bids do nothing to promote excellence in college football. Virtually every athlete worth his salt would support bids being earned on the field....every year....as is done in basketball. The SEC is just trying to bully and brag their way into the playoffs...and they have proven unworthy of any auto bids for the past two seasons. Earn it on the field!!!