Yes, it's not only the returns, but the volatility of your equity curve that matters, or how much you suffer along the way. I decided to put together some equity curves, assuming that on day 1 we have $10000 and then I execute only calendars, and repeated that with strangles, straddles, hedged Straddles, RICs, calendars and straddles together, and the whole set of SO trades.
The first thing you will notice is that calendars on their own are great, probably because they tend to start half size.
Strangles started strong but have been just doing nothing
Straddles are slow and steady, rarely producing big drawdowns.
Hedged straddles joined the party rather late, so it may be too soon to say if the current chop if the curve will remain so
RICs really had to go
Once you start combining, the curve starts smoothing. This is just calendars and straddles:
The combination of great, good, and not so good strategies, having their successes and failures along the way, really smoothed the equity curve of SO:
This shows why SO has such a high Sharpe ratio.
I am glad I discovered SO! Excited to learn all these strategies!