Safer as in which will grow up to eat the TSN?
The one thing i have noticed is that the growth seems more dependent on the fish. I have 2 hybrids and 2 RTC, my one hybrid grew 5.5 inches in a month while the other one grew 4inches (on the same diet). I have only had my RTC for 10 days and they have both packed on the same amount of weight and length (about 1.25 inches). So I have one hybrid growing slower than a RTC and one growing slightly faster. I think on the average, they have a relatively even growth rate, at least in my experience.
I will say this about safety, my RTCs are more aggressive when it comes to eating than my hybrids, they literally will eat whatever fits in there mouth. At 4 inches they were slammin massivore pellets like nothin. My hybrids can be picky eaters.
Personality wise, I like the RTCs a little bit better... safety wise you MIGHT be safer with a hybrid but probably not by much. I am not sure how fast TSN grow but my hybrid went from 4.5 inches to over 10 in 35 days.
or who would most likely be eaten by the TSN now?
I think either will grow fast enough to not get swallowed up if you keep your TSN full and offer plenty of hiding. Like I said, I have never owned a TSN but my hybrid at 8 inches slammed down a 4 inch fish.