Being a bit harsh there Cyril. Saying that he can't even get in the Scarlets side is weird, considering he's been injured for a while. Morgan Stoddard is an immense line breaker (one of the best I've seen). Play him on the wing, and his main waekness is mostly nullified. I don't think he deserved this place, as he's just back from injury. However Gatland has already said that one of the main reasons he was picked to replace Jones is because he's been involved with the Wales squad before, so he'll fit in quickly.
He still has a lot to work on. His positioning play isn't great, and he tends to rush into the tackle, making it easy for his opponent to sidestep him. He's also increadibly selfish (something which needs to change). But he's still an attacking monster, something every team would want.