Better just can't be the operative word. Which one is preferred may be better, but unless someone has used both, really checked into both, I'm not sure he/she could give an objective opinion.
Have you checked them both out? Which one do you sit best?
I like the Kubotas and New Hollands as lot. My cousin has a TC33 and it's a fine tractor, but I like its sloping hood better than the square TC30.
There really isn't enough HP difference to quibble about. The Kubota has a little more lift capacity, they both have about the same hydro flow.
I don't think you'd go wrong with either of them. The New Holland may be a better price.
They will both do a lot of work, so I think it's up to you to decide which is the better deal FOR YOU. John