As said above though it's not about playing a team full of youngsters in a dead European rubber or playing them for one game to cover injury/suspension. It's about trusting youngsters and putting your faith in them to support them through a difficult patch .
Stones making mistakes was supported through it by Martinez . Ross gave a penalty away at Blackburn and wasn't trusted for a while , unless my memory is going. Also another occasion at Blackburn didn't peter Clarke have a stinker and just disappear ?
The idea that some of these young players didn't go on to have stellar careers doesn't necessarily mean they weren't good enough . It might mean that but it also might mean they weren't handled properly through their development , that's not a specific Moyes dig by the way .
Stones was 19 and had played first team for Barnsley and was blatantly good enough regardless of mistakes to play first team for us. Ross was 17, straight back from a huge injury. The hype around him was enormous. He's 21 now and this is the first season id say he's playing consistently, yet people wanted him in in the first team at 17 for most games? Baffling.
Martinez's rep has been inflated somewhat by injuries. The only two players who have nailed down first team spots are Barkley and Stones. Stones only got in the team thanks to an injury to Jags and then Distin falling off a cliff. Start of 14/15 Stones was at RB whilst Jags and Distin started. It was only as Distin declined Martinez made him a full first choice player.
Galloway will be straight out of the team as soon as Baines is fit. Browning was straight out the team as soon as Coleman was half fit. (Both playing out of position by the way for all you who like to bash Moyes' treatment of Coleman).
Ultimately old heads still rule over giving academy players a chance. Ledson cannot get a game whilst Barry does, Cleverley was bought in unnecessarily rather than giving one of the young players a chance. McAleny barely gets a look in upfront.
In my mind they're the same. Both are good at making sure the top talent gets to the first team but both are reluctant to replace experience with academy players. Shock horror, maybe most aren't good enough.
Where Martinez has done well is buying top youth players. Deulofeu, Lukaku etc. But then Moyes bought Coleman and turned him into the league's top right back, and also bought Stones.
Moyes was also round at Barkleys house when he broke his leg reassuring him of his future so all these stories making him out as someone not interested in youth whatsoever seem baloney.