Well, they sure didn't waste any time putting that new crane into action!
For that, and a lot of other reasons I continue to say that T4 will top out before T1. Unless I missed an earlier post, I think I was the first forum member to make that prediction (here in this thread) and it looks like that point of view is becoming more popular.
I don't see what can stop it now, T4 only has what, two jumps left? And the T1 upper levels are vastly more complicated, and bigger to boot.