According to Eric Balchunas, Buffer ETF firm Vest has issued a rebuttal to AQR's report labeling their funds as a 'bad deal.' Vest argues that AQR's analysis is flawed due to the inclusion of non-buffer funds in their dataset of 99 funds from Morningstar's 'Equity Hedged,' 'Defined Outcome,' and 'Derivative Income' categories. This clarification is crucial for traders assessing the value proposition of buffer ETFs.