I like it, it has a 5th Element vibe to it! But I like your first one better:
"When a young, arrogant celebrity athlete is framed for blowing up the floating Imperial sky-palace, he escapes with a rag-tag bunch of surfacer teens into the planet's crime-ridden slums to bring to justice the Empire's most notorious terrorist ? its ruler."
In your first logline it is clear that the main character is the athlete, and an inner journey is promised: from arrogant to humble.
In the new one, who is the main character? It could be the athlete or one of the orphans. And no inner journey is promised. I suggest re-writing it so the main character is clear, and give him a weakness, so we are promised an inner journey.