Really, I find very few things that separate these two stat spreads, if at all. They both have almost the same defenses, but GT's hits slightly harder than Time Mage's and GT's is slightly slower than Time Mage's.
In view of this, I don't really know what to vote for. Personally I would have liked the offenses to be a little bit nearer to each other (a full 40 base points from Atk and SpA is kinda too much for my tastes).
I'll vote later when I make up my mind.