He was moderately highly rated based upon being more than a year older than he claimed to be. The evaluation for what is plus for a 16-year old is more lenient than what is plus for a 17+-year old. IF he got his $2.5 bonus, I don't see how this can be spun as anything but a debacle. I assume the signing bonus must have been significantly lower, because what sane person honors his deal with a demonstrated con artist, when he can legally walk away from it? I'm guessing his actual scouting value today is more like $250K.
The question upthread was 'why would he cheat and thus delay a big pay day?' The answer to that question is obvious: he knew he had no chance of commanding a big pay day when he actually was 16, because he just didn't stack up with the best 16-year olds that year (and really, since commitments are made early, the decision to con likely happened when he was 15 and did not look plus against other 15-year olds). He, his parents, his buscone, saw cheating as the ONLY way he would get big $, because his true talent level didn't justify a big bonus.
Every year, the Phillies sign older LA players -- 18 year olds, sometimes even a 19-year old. Some as first-time signings, some guys released or commissioner-freed from other organizations. The Phillies don't give the first-time signees anywhere approaching $2.5 million, although the commissioner-freed guys have gotten decent bonuses.