No, that isn't an inexperienced view. I don't think you're including flowering time in your calculation of yield. Indica will always yield more, always, always...always. I could seriously pull two crops with the time it takes some sativas to finish.
Bubba Kush, solid indica, doesnt yield shit. Also takes about 75 days to finish, there is plenty of hybrids that take a week or so more that yield double.
Anything that grows a single stem, slow to veg with minimal side branching and doesn't stretch generally doesn't yield shit. I've got pure afghans straight from Afghanistanin veg right now, extreme broad leafs as pure indica as it gets and 2 months into veg cycle they have not one side branch, my prediction, their yield will be low.