Yields are a variable thing that are hard to pin down. Grower experience, environmental factors, genetics, LUCK...and more all play into what yer gonna see at the end of the run...
For SMALLER plants INDOORS..I think an indica will usually outperform a sativa in yield. Larger plants? Different story and the scales can tip either way. (literally)
No way to really tell what you have there/what strain/what species, etc. As I say...looks more indica/indica dominate to me....but only time will tell. What was the weed like the seeds came from?
all you can do is hang on fo' the ride....
good luck
bt dt