Rotkeil color looks much pretty much like any standard green severum when they're younger, it takes time for the red to develop, so that's not the criteria for younger fish. IME, having raised quite a number of them, they tend to look like standard green severums until at least 3.5- 4 inches (will vary with individual).
However, I'm counting 9 bars on both of yours (including eye and base of the tail), rotkeils have 8. Unless both fish have bars 6,7 fused at the top and it's a split bar that should be a single bar. (Can't see top of bar 6,7 on the smaller fish.) Rotkeils don't particularly have body spotting, at least not those I've had or seen, it's more about the band of red/orange behind the face and gill plate.