Do you mean Ethyn Martin? I suspect Lumelume is on at least as much, but I also don't think Martin is considered a 'high potential' youngster by anyone. He is too old for Flegg (22 this year) but never even played reserve grade. Lumelume had already played 20 games in NSW Cup by 22, plus he played a few games in first grade that year. Martin has done none of this.
High potential youngsters are people like Penisini, Russell and Talagi. They would all be on more than Lumelume. Penisini and Russell are the same age as Ethyn Martin. Talagi is three years younger.
Tuilagi defending next to Lane is another horror show that Cleary and Edwards would have exploited. Just accept that if there were a better option, we would have done it. And we were winning when Tuilagi busted his shoulder.