Two suggestions
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Please compare apples to apples with respect to underlying exposure (comparing S&P 500 to World etf is not a fair comparison) . For example compare S&P 500 hedged vs unhedged to understand impact of hedging
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Have a look at this thread about hedged ETF. Please read the full thread and not just few comments
Last point, try to focus on future expected returns and not past realised returns. It’s tough to focus on future expected returns but it’s the only thing that matters