Eh? The averages say otherwise. And unlike those others you mentioned who by the way also look cracking prospects, Hume has only been riding Speedway for two years after switching from trials.
I saw Hume sit on a Speedway bike for the very first time in 2014 at Coventry when he was offered a spin and the progress he's made in such a short space of time is very impressive. He put nearly 4 points on his average for Birmingham this year from the main body of the side, not reserve. I'll have a bet with you that Hume will end next season with a higher average than the other 3 you mentioned.
You're severely underrating this lads potential.