I think you have a valid point there. However, I can see Dee Gordon at 99 speed and I'm not sure Trout is as fast, maybe 96, 97, or at most a possible 98.
I've played with Trout and seen him get thrown out trying for a double, and saw him make a base running mistake and get thrown out at third base. Now that stuff really shocked me for a guy rated 90 for base running.
I wanted to try stealing with auto base running so I sent Dee Gordon to second--he got thrown out by Posey. Last year, runners stole 87 bases on Posey and he threw out 38. My impression is the game loves Posey and when the game loves you, you get privileges