How about the fact that the Typhoon H can only travel at a max speed of 22 mph (10 meters per second) The Phantom 4 travels at that speed when obstacle avoidance is turned on but can be switched to Sport mode to cover ground faster when Obstacle Avoidance is not needed.
Typhoon H has a wider field of view so the images will be more distorted (like a Phantom 2 Vision + or GoPro VS the Phantom 3 Or Phantom 4)
Typhoon H is not available yet, Phantom 4 is.
Typhoon H has a 7" monitor built into the controller so you have no option of what size display to use. I personally love my 9.7" iPad Pro.
FPV only works up to 400 meters. That is optimal conditions and I can tell you that the Phantom 4 can go at least 4 or 5 times farther than that in optimal conditions. Check the thread about distance records and there are people doing more than 2000 meters stock. I personally have flown more than 2 miles out stock no problem. 1 mile in urban areas with lots of trees and interference.
Accessories are more readily available for the Phantom 4
The bottom line is the Typhoon H is not available yet. There could very well be a Phantom 5 out by the time the Typhoon H is released.
The P5 will be nowhere near ready when the Typhoon H is released.
There are inherent benefits to each. As someone (myself) that will not only have the H, but I'll have one of the first ones as they roll out, possibly even an early one, I can say that I have no dog in the race.
There is no question that there have been some issues with the P4 but I can also guarantee that there will be issues with the H.
It is my THEORY that the P4 was released a little early and while early adopters should expect a certain amount of issues, they are too many and too important to have been rolled out like it was. That said, they seem to slowly but surely working their way to a mostly good production line but buy from Apple or Best Buy and if you get a bad one, you bring it back. Simple as that.
As for the 22mph, that's fine for me. You need to know your desires and if it doesn't meet them, that's fine but if you ask a Phantom forum about what you should do, well you're going to get a skewed response. I would suggest going to RCGroups to ask the questions you are seeking,
I would keep in mind that DJI makes not only the Phantom but a bunch of other products including the flight boards, ESCs and motors that are used and trusted within not only the photography community, but also the hobbyist DYI community.
DJI is still the most innovative company when it comes to UASs. Yuneec is definitely making strong strides towards chipping away at the monopoly and I keep waiting for that thing to show up at my door but I would rather them work out kinks than turn out a shotty product. I mean, DJI should probably releasing the P4 right now. It might have been a finanicial short term bad decision but in my opinion htey have caused some irrepurable harm from both old and new customers. The older clients have been around long enough to know that DJI is a quality company when it comes to parts and non-DIY as well and Yuneec are flat out not using components that are as quality as the DJI line but who if you don't assemble those quality components well or are an engineer where you can fix things yourself, it's best if the machine you get works. The P4 is definitely getting better from the line but it's not perfect, and neither will the H.