Funny, and here I was thinking Ten was the whiny, bratty man-child.
"The laws of time are mine. And they will obey me!!!"
"I'm the winner. Timelord Victorious."
"I don't want to die!!!"
What happened after each of those instances? Ten realized his mistakes. He paid for it when Brook suicides herself. Ten gives his life so Wilf won't have to, even though Wilf wants
to die so Ten won't have to.
You're not wrong that Ten had some of these same issues. The part where you're wrong is that unlike Eleven, Ten actually learns
from these missteps.