That's debatable. (Did I spell that right?

)
I've had both. When kate's hair was cute short and blonde (not the dark icky look she sported about the time of their birth) cut short in the back, possibly over the ears and had long bangs down to her eyebrows (but not long side bangs like when she was growing into what she has now), that is a fairly easy short 'do. It depends on the haircut and how well it is cut, but that style takes little time to do, falls into place but must be blown dried and fixed a bit.
However, go into that cut and cut it shorter and you have a lot of work! That is when short hair can be just as time consuming as longer hair. Drying time is cut down but that's all. Unless it is short and spiked, short hair can take a lot of time when done like that.
What she has now is very similar to what I have. Mine's cut better though

and I don't have the heavy bang or rooster tails but otherwise it is quite similar w/o looking like 2 different (or 3! LOL) styles on one head. Anyway, THIS is the easiest I have ever had my hair. I'm a hairstylist so I've had a lot of different styles and this one is easy, quick to dry, and stays looking nice enough even after a long day. Kate would look silly to me dressed in such cute clothes and sporting a ponytail! While I'd change up her style in a heartbeat, I'd still give her something short and sassy and this easy to do. JMHO.